diff --git a/Java-Kompendium/.gitignore b/Java-Kompendium/.gitignore index 6b468b6..97337d6 100644 --- a/Java-Kompendium/.gitignore +++ b/Java-Kompendium/.gitignore @@ -1 +1,6 @@ *.class +build/ +.gradle/ +.classpath +.project +.settings diff --git a/Java-Kompendium/kap11/Task1.java b/Java-Kompendium/kap11/Task1.java new file mode 100644 index 0000000..0b4fe35 --- /dev/null +++ b/Java-Kompendium/kap11/Task1.java @@ -0,0 +1,20 @@ +import javax.swing.JOptionPane; + +public class Task1 { + public static void main(String[] arguments) { + var result = JOptionPane.showConfirmDialog(null, + "Bestätigen Sie die Eingabe", "Bestätigung", JOptionPane.YES_NO_CANCEL_OPTION); + + switch (result) { + case JOptionPane.YES_OPTION: + JOptionPane.showMessageDialog(null, "Ja"); + break; + case JOptionPane.NO_OPTION: + JOptionPane.showMessageDialog(null, "Nein"); + break; + case JOptionPane.CANCEL_OPTION: + JOptionPane.showMessageDialog(null, "Abbrechen"); + break; + } + } +} diff --git a/Java-Kompendium/kap11/Task2.java b/Java-Kompendium/kap11/Task2.java new file mode 100644 index 0000000..afb7ca8 --- /dev/null +++ b/Java-Kompendium/kap11/Task2.java @@ -0,0 +1,11 @@ +import javax.swing.JOptionPane; + +public class Task2 { + public static void main(String[] arguments) { + var rawResult = JOptionPane.showInputDialog(null, "Geben Sie eine Zahl ein:"); + var input = Integer.parseInt(rawResult); + Double result = Math.sqrt(input); + + JOptionPane.showMessageDialog(null, result.toString(), "Die Wurzel ist:", JOptionPane.INFORMATION_MESSAGE); + } +} diff --git a/Java-Kompendium/kap14/1/Notizen.txt b/Java-Kompendium/kap14/1/Notizen.txt new file mode 100644 index 0000000..e69de29 diff --git a/Java-Kompendium/kap14/1/build.gradle b/Java-Kompendium/kap14/1/build.gradle new file mode 100644 index 0000000..2130bf6 --- /dev/null +++ b/Java-Kompendium/kap14/1/build.gradle @@ -0,0 +1,21 @@ +plugins { + id 'application' + id 'org.openjfx.javafxplugin' version '0.1.0' +} + +repositories { + mavenCentral() +} + +javafx { + version = "21" + modules = ['javafx.controls'] +} + +run { + standardInput = System.in +} + +application { + mainClass = 'Task1' +} diff --git a/Java-Kompendium/kap14/1/gradle/libs.versions.toml b/Java-Kompendium/kap14/1/gradle/libs.versions.toml new file mode 100644 index 0000000..4ac3234 --- /dev/null +++ b/Java-Kompendium/kap14/1/gradle/libs.versions.toml @@ -0,0 +1,2 @@ +# This file was generated by the Gradle 'init' task. +# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format diff --git a/Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.jar b/Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..8bdaf60 Binary files /dev/null and b/Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.jar differ diff --git a/Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.properties b/Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..2e11132 --- /dev/null +++ b/Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Java-Kompendium/kap14/1/gradlew b/Java-Kompendium/kap14/1/gradlew new file mode 100755 index 0000000..adff685 --- /dev/null +++ b/Java-Kompendium/kap14/1/gradlew @@ -0,0 +1,248 @@ +#!/bin/sh + +# +# Copyright © 2015 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Java-Kompendium/kap14/1/gradlew.bat b/Java-Kompendium/kap14/1/gradlew.bat new file mode 100644 index 0000000..e509b2d --- /dev/null +++ b/Java-Kompendium/kap14/1/gradlew.bat @@ -0,0 +1,93 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Java-Kompendium/kap14/1/src/main/java/EnterHandler.java b/Java-Kompendium/kap14/1/src/main/java/EnterHandler.java new file mode 100644 index 0000000..f612707 --- /dev/null +++ b/Java-Kompendium/kap14/1/src/main/java/EnterHandler.java @@ -0,0 +1,31 @@ +import java.io.*; + +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.scene.control.Alert; +import javafx.scene.control.TextField; +import javafx.scene.control.Alert.AlertType; + +public final class EnterHandler implements EventHandler { + private BufferedWriter outputStream; + private TextField inputField; + + public EnterHandler(TextField input, BufferedWriter output) { + this.outputStream = output; + this.inputField = input; + } + + public void handle(ActionEvent event) { + Alert alert; + try { + this.outputStream.write(inputField.getText() + "\n"); + } catch (IOException exception) { + alert = new Alert(AlertType.ERROR, exception.getMessage()); + alert.showAndWait(); + return; + } + alert = new Alert(AlertType.INFORMATION, "Gespeichert"); + alert.showAndWait(); + inputField.setText(""); + } +} diff --git a/Java-Kompendium/kap14/1/src/main/java/Task1.java b/Java-Kompendium/kap14/1/src/main/java/Task1.java new file mode 100644 index 0000000..14ced3a --- /dev/null +++ b/Java-Kompendium/kap14/1/src/main/java/Task1.java @@ -0,0 +1,40 @@ +import java.io.*; + +import javafx.scene.Scene; +import javafx.scene.control.TextField; +import javafx.scene.layout.StackPane; +import javafx.application.Application; +import javafx.stage.Stage; +import javafx.scene.control.Alert; +import javafx.scene.control.Alert.AlertType; + +public class Task1 extends Application { + BufferedWriter output = null; + + @Override + public void start(Stage stage) { + var userInput = new TextField(); + var root = new StackPane(userInput); + var scene = new Scene(root, 400, 300); + + stage.setTitle("Geben Sie Ihre Notiz ein:"); + stage.setScene(scene); + + try { + this.output = new BufferedWriter(new FileWriter("Notizen.txt", true)); + + userInput.setOnAction(new EnterHandler(userInput, output)); + } catch (IOException exception) { + var alert = new Alert(AlertType.ERROR, exception.getMessage()); + alert.showAndWait(); + } + stage.show(); + } + + @Override + public void stop() throws IOException { + if (this.output != null) { + output.close(); + } + } +} diff --git a/Java-Kompendium/kap14/2/Task2.java b/Java-Kompendium/kap14/2/Task2.java new file mode 100644 index 0000000..2569c89 --- /dev/null +++ b/Java-Kompendium/kap14/2/Task2.java @@ -0,0 +1,32 @@ +import java.io.*; + +public class Task2 { + public static void main(String[] args) { + FileInputStream fileReader = null; + + try { + fileReader = new FileInputStream("../1/Notizen.txt"); + } catch (FileNotFoundException exception) { + System.out.println(exception.getMessage()); + return; + } + var inputStream = new InputStreamReader(fileReader); + var bufferedStream = new BufferedReader(inputStream); + + try { + String input = bufferedStream.readLine(); + int counter = 1; + + while (input != null) { + System.out.println(counter + ". " + input); + + ++counter; + input = bufferedStream.readLine(); + } + + bufferedStream.close(); + } catch (IOException exception) { + System.out.println(exception.getMessage()); + } + } +} diff --git a/Java-Kompendium/kap15/build.gradle b/Java-Kompendium/kap15/build.gradle new file mode 100644 index 0000000..eac925f --- /dev/null +++ b/Java-Kompendium/kap15/build.gradle @@ -0,0 +1,25 @@ +plugins { + id 'application' + id 'org.openjfx.javafxplugin' version '0.1.0' +} + +repositories { + mavenCentral() +} + +javafx { + version = "21" + modules = ['javafx.controls'] +} + +dependencies { + runtimeOnly 'org.hsqldb:hsqldb:2.7.4' +} + +run { + standardInput = System.in +} + +application { + mainClass = 'Marks' +} diff --git a/Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.jar b/Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..8bdaf60 Binary files /dev/null and b/Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.jar differ diff --git a/Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.properties b/Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..2e11132 --- /dev/null +++ b/Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Java-Kompendium/kap15/gradlew b/Java-Kompendium/kap15/gradlew new file mode 100755 index 0000000..adff685 --- /dev/null +++ b/Java-Kompendium/kap15/gradlew @@ -0,0 +1,248 @@ +#!/bin/sh + +# +# Copyright © 2015 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Java-Kompendium/kap15/gradlew.bat b/Java-Kompendium/kap15/gradlew.bat new file mode 100644 index 0000000..e509b2d --- /dev/null +++ b/Java-Kompendium/kap15/gradlew.bat @@ -0,0 +1,93 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Java-Kompendium/kap15/src/main/java/Mark.java b/Java-Kompendium/kap15/src/main/java/Mark.java new file mode 100644 index 0000000..d5bf856 --- /dev/null +++ b/Java-Kompendium/kap15/src/main/java/Mark.java @@ -0,0 +1,36 @@ +import javafx.beans.property.StringProperty; +import javafx.beans.property.IntegerProperty; +import javafx.beans.property.SimpleIntegerProperty; +import javafx.beans.property.SimpleStringProperty; + +public class Mark { + private StringProperty subject; + private IntegerProperty mark; + + public Mark(String subject, Integer mark) { + subjectProperty().set(subject); + markProperty().set(mark); + } + + public StringProperty subjectProperty() { + if (this.subject == null) { + this.subject = new SimpleStringProperty(this, "subject"); + } + return this.subject; + } + + public IntegerProperty markProperty() { + if (this.mark == null) { + this.mark = new SimpleIntegerProperty(this, "mark"); + } + return this.mark; + } + + public String getSubject() { + return this.subjectProperty().get(); + } + + public Integer getMark() { + return this.markProperty().get(); + } +} diff --git a/Java-Kompendium/kap15/src/main/java/Marks.java b/Java-Kompendium/kap15/src/main/java/Marks.java new file mode 100644 index 0000000..6ec6c06 --- /dev/null +++ b/Java-Kompendium/kap15/src/main/java/Marks.java @@ -0,0 +1,127 @@ +import javafx.application.Application; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.control.Label; +import javafx.scene.control.Separator; +import javafx.scene.control.TableColumn; +import javafx.scene.control.TableView; +import javafx.scene.control.TextField; +import javafx.scene.control.cell.PropertyValueFactory; +import javafx.scene.layout.GridPane; +import javafx.scene.text.Text; +import javafx.stage.Stage; +import java.sql.*; + +public class Marks extends Application { + private GridPane grid; + private Text status; + private Connection connection; + + @Override + public void start(Stage stage) { + this.grid = new GridPane(); + this.createStatus(); + this.createTable(); + this.createForm(); + this.createSearch(); + + this.grid.setVgap(5); + this.grid.setHgap(5); + this.grid.setAlignment(Pos.CENTER); + + var scene = new Scene(this.grid, 500, 400); + + stage.setScene(scene); + stage.setTitle("Noten von Schülern"); + stage.show(); + } + + private void createStatus() { + this.status = new Text(); + + this.grid.add(this.status, 0, 0, 2, 1); + } + + private void createSearch() { + var field = new TextField(); + var button = new Button("Suchen"); + var line = new Separator(); + var table = new TableView(); + + try { + var handler = new SearchAction(this.connection, this.status, field); + table.setItems(handler.getMarks()); + + var subjectColumn = new TableColumn("Fach"); + subjectColumn.setCellValueFactory( + new PropertyValueFactory<>("subject" /* handler.getMarks().get(0).subjectProperty().getName() */) + ); + + var markColumn = new TableColumn("Note"); + markColumn.setCellValueFactory( + new PropertyValueFactory<>("mark" /* handler.getMarks().get(0).markProperty().getName() */) + ); + table.getColumns().setAll(subjectColumn, markColumn); + + button.setOnAction(handler); + } catch (SQLException exception) { + this.status.setText(exception.getMessage()); + } + line.setMinSize(10, 10); + + this.grid.add(line, 0, 6, 2, 1); + this.grid.add(button, 0, 7); + this.grid.add(field, 1, 7); + this.grid.add(table, 0, 8, 2, 1); + } + + private void createForm() { + var nameField = new TextField(); + var nameLabel = new Label("Name"); + var englishField = new TextField(); + var englishLabel = new Label("Englisch"); + var germanField = new TextField(); + var germanLabel = new Label("Deutsch"); + var mathField = new TextField(); + var mathLabel = new Label("Mathematik"); + var saveButton = new Button("Speichern"); + + try { + var action = new SaveAction(this.connection, nameField, englishField, germanField, mathField, this.status); + saveButton.setOnAction(action); + } catch (SQLException exception) { + this.status.setText(exception.getMessage()); + } + + this.grid.add(nameLabel, 0, 1); + this.grid.add(nameField, 1, 1); + this.grid.add(englishLabel, 0, 2); + this.grid.add(englishField, 1, 2); + this.grid.add(germanLabel, 0, 3); + this.grid.add(germanField, 1, 3); + this.grid.add(mathLabel, 0, 4); + this.grid.add(mathField, 1, 4); + this.grid.add(saveButton, 1, 5); + } + + private void createTable() { + try { + var host = "jdbc:hsqldb:mem:mitarbeiter;shutdown=true"; + this.connection = DriverManager.getConnection(host); + var statement = connection.createStatement(); + + statement.executeUpdate(""" + CREATE TABLE IF NOT EXISTS marks ( + mark_id identity PRIMARY KEY, + name VARCHAR, + english integer, + german integer, + math integer + ) + """); + } catch (SQLException exception) { + this.status.setText(exception.getMessage()); + } + } +} diff --git a/Java-Kompendium/kap15/src/main/java/SaveAction.java b/Java-Kompendium/kap15/src/main/java/SaveAction.java new file mode 100644 index 0000000..a1c0e9b --- /dev/null +++ b/Java-Kompendium/kap15/src/main/java/SaveAction.java @@ -0,0 +1,50 @@ +import javafx.event.EventHandler; +import javafx.event.ActionEvent; +import javafx.scene.control.TextField; +import javafx.scene.text.Text; +import java.sql.*; + +public class SaveAction implements EventHandler { + private TextField name; + private TextField english; + private TextField german; + private TextField math; + private Text status; + private PreparedStatement statement; + + public SaveAction( + Connection connection, + TextField name, + TextField english, + TextField german, + TextField math, + Text status + ) throws SQLException { + this.statement = connection.prepareStatement( + "INSERT INTO marks (name, english, german, math) VALUES (?, ?, ?, ?)" + ); + this.name = name; + this.english = english; + this.german = german; + this.math = math; + this.status = status; + } + + public void handle(ActionEvent event) { + try { + this.statement.setString(1, this.name.getText()); + this.statement.setInt(2, Integer.parseInt(this.english.getText())); + this.statement.setInt(3, Integer.parseInt(this.german.getText())); + this.statement.setInt(4, Integer.parseInt(this.math.getText())); + + this.statement.execute(); + + this.name.setText(""); + this.english.setText(""); + this.german.setText(""); + this.math.setText(""); + } catch (SQLException exception) { + this.status.setText(exception.getMessage()); + } + } +} diff --git a/Java-Kompendium/kap15/src/main/java/SearchAction.java b/Java-Kompendium/kap15/src/main/java/SearchAction.java new file mode 100644 index 0000000..45aa84f --- /dev/null +++ b/Java-Kompendium/kap15/src/main/java/SearchAction.java @@ -0,0 +1,44 @@ +import javafx.collections.ObservableList; +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.scene.control.TextField; +import javafx.scene.text.Text; +import java.sql.*; +import javafx.collections.FXCollections; + +public class SearchAction implements EventHandler { + private Text status; + private TextField field; + private PreparedStatement statement; + private ObservableList marks = FXCollections.observableArrayList(); + + public SearchAction(Connection connection, Text status, TextField field) throws SQLException { + this.statement = connection.prepareStatement( + "SELECT english, german, math FROM marks WHERE name LIKE ?" + ); + this.status = status; + this.field = field; + } + + public void handle(ActionEvent action) { + try { + this.statement.setString(1, this.field.getText()); + this.statement.execute(); + + var results = this.statement.getResultSet(); + + this.marks.clear(); + if (results.next()) { + this.marks.add(new Mark("Englisch", results.getInt(1))); + this.marks.add(new Mark("Deutsch", results.getInt(2))); + this.marks.add(new Mark("Mathematik", results.getInt(3))); + } + } catch (Exception exception) { + this.status.setText(exception.getMessage()); + } + } + + public ObservableList getMarks() { + return this.marks; + } +} diff --git a/Java-Kompendium/kap16/1/build.gradle b/Java-Kompendium/kap16/1/build.gradle new file mode 100644 index 0000000..5f3bb04 --- /dev/null +++ b/Java-Kompendium/kap16/1/build.gradle @@ -0,0 +1,17 @@ +plugins { + id 'application' + id 'org.openjfx.javafxplugin' version '0.1.0' +} + +repositories { + mavenCentral() +} + +javafx { + version = '21' + modules = ['javafx.controls'] +} + +application { + mainClass = 'App' +} diff --git a/Java-Kompendium/kap16/1/gradle/libs.versions.toml b/Java-Kompendium/kap16/1/gradle/libs.versions.toml new file mode 100644 index 0000000..f50a589 --- /dev/null +++ b/Java-Kompendium/kap16/1/gradle/libs.versions.toml @@ -0,0 +1,10 @@ +# This file was generated by the Gradle 'init' task. +# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format + +[versions] +guava = "33.4.6-jre" +junit = "4.13.2" + +[libraries] +guava = { module = "com.google.guava:guava", version.ref = "guava" } +junit = { module = "junit:junit", version.ref = "junit" } diff --git a/Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.jar b/Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..8bdaf60 Binary files /dev/null and b/Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.jar differ diff --git a/Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.properties b/Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..2e11132 --- /dev/null +++ b/Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Java-Kompendium/kap16/1/gradlew b/Java-Kompendium/kap16/1/gradlew new file mode 100755 index 0000000..adff685 --- /dev/null +++ b/Java-Kompendium/kap16/1/gradlew @@ -0,0 +1,248 @@ +#!/bin/sh + +# +# Copyright © 2015 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Java-Kompendium/kap16/1/gradlew.bat b/Java-Kompendium/kap16/1/gradlew.bat new file mode 100644 index 0000000..e509b2d --- /dev/null +++ b/Java-Kompendium/kap16/1/gradlew.bat @@ -0,0 +1,93 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Java-Kompendium/kap16/1/src/main/java/App.java b/Java-Kompendium/kap16/1/src/main/java/App.java new file mode 100644 index 0000000..1c84a33 --- /dev/null +++ b/Java-Kompendium/kap16/1/src/main/java/App.java @@ -0,0 +1,21 @@ +import javafx.application.Application; +import javafx.scene.Scene; +import javafx.scene.control.Label; +import javafx.scene.layout.StackPane; +import javafx.stage.Stage; + +public class App extends Application { + @Override + public void start(Stage stage) { + var label = new Label("Willkommen zu unserem fensterbasierten Programm!"); + var scene = new Scene(new StackPane(label), 500, 300); + + stage.setTitle("Fenster 1"); + stage.setScene(scene); + stage.show(); + } + + public static void main(String[] args) { + launch(); + } +} diff --git a/Java-Kompendium/kap16/2/build.gradle b/Java-Kompendium/kap16/2/build.gradle new file mode 100644 index 0000000..e877b62 --- /dev/null +++ b/Java-Kompendium/kap16/2/build.gradle @@ -0,0 +1,17 @@ +plugins { + id 'application' + id 'org.openjfx.javafxplugin' version '0.1.0' +} + +repositories { + mavenCentral() +} + +javafx { + version = '21' + modules = ['javafx.controls'] +} + +application { + mainClass = 'HelloFX' +} diff --git a/Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.jar b/Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..41d9927 Binary files /dev/null and b/Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.jar differ diff --git a/Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.properties b/Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..d706aba --- /dev/null +++ b/Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Java-Kompendium/kap16/2/gradlew b/Java-Kompendium/kap16/2/gradlew new file mode 100755 index 0000000..1b6c787 --- /dev/null +++ b/Java-Kompendium/kap16/2/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Java-Kompendium/kap16/2/gradlew.bat b/Java-Kompendium/kap16/2/gradlew.bat new file mode 100644 index 0000000..ac1b06f --- /dev/null +++ b/Java-Kompendium/kap16/2/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Java-Kompendium/kap16/2/src/main/java/HelloFX.java b/Java-Kompendium/kap16/2/src/main/java/HelloFX.java new file mode 100644 index 0000000..df6f82f --- /dev/null +++ b/Java-Kompendium/kap16/2/src/main/java/HelloFX.java @@ -0,0 +1,87 @@ +import javafx.application.Application; +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.control.Label; +import javafx.scene.control.TextField; +import javafx.scene.layout.GridPane; +import javafx.scene.text.Font; +import javafx.scene.text.FontWeight; +import javafx.scene.text.Text; +import javafx.stage.Stage; + +public class HelloFX extends Application { + + @Override + public void start(Stage stage) { + stage.setTitle("Rechenprogramm"); + + var grid = new GridPane(); + grid.setAlignment(Pos.CENTER); + grid.setPadding(new Insets(5, 5, 5, 5)); + grid.setHgap(5); + grid.setVgap(5); + + var title = new Text("Rechenprogramm"); + title.setFont(Font.font("Arial", FontWeight.BOLD, 25)); + grid.add(title, 0, 0, 4, 1); + + var numberLabel = new Label("Zahl:"); + grid.add(numberLabel, 0, 1); + + var numberInput = new TextField(); + grid.add(numberInput, 1, 1, 3, 1); + + var doubleButton = new Button("Doppelt"); + grid.add(doubleButton, 1, 3); + + var quadratButton = new Button("Quadrat"); + grid.add(quadratButton, 2, 3); + + var squareButton = new Button("Wurzel"); + grid.add(squareButton, 3, 3); + + var result = new Text(); + grid.add(result, 1, 2, 3, 1); + + doubleButton.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + var value = numberInput.getText(); + var number = Integer.parseInt(value); + + result.setText(Integer.toString(number * 2)); + } + }); + quadratButton.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + var value = numberInput.getText(); + var number = Integer.parseInt(value); + + result.setText(Integer.toString(number * number)); + } + }); + squareButton.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + var value = numberInput.getText(); + var number = Integer.parseInt(value); + + result.setText(Double.toString(Math.sqrt(number))); + } + }); + + Scene scene = new Scene(grid, 500, 300); + stage.setScene(scene); + stage.show(); + } + + public static void main(String[] args) { + launch(); + } + +} diff --git a/Java-Kompendium/kap17/build.gradle b/Java-Kompendium/kap17/build.gradle new file mode 100644 index 0000000..2c8161b --- /dev/null +++ b/Java-Kompendium/kap17/build.gradle @@ -0,0 +1,25 @@ +plugins { + id 'application' + id 'org.openjfx.javafxplugin' version '0.1.0' +} + +repositories { + mavenCentral() +} + +javafx { + version = '21' + modules = ['javafx.controls'] +} + +dependencies { + runtimeOnly 'org.hsqldb:hsqldb:2.7.4' +} + +run { + standardInput = System.in +} + +application { + mainClass = 'Hauptfenster' +} diff --git a/Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.jar b/Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..8bdaf60 Binary files /dev/null and b/Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.jar differ diff --git a/Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.properties b/Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..2e11132 --- /dev/null +++ b/Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/Java-Kompendium/kap17/gradlew b/Java-Kompendium/kap17/gradlew new file mode 100755 index 0000000..adff685 --- /dev/null +++ b/Java-Kompendium/kap17/gradlew @@ -0,0 +1,248 @@ +#!/bin/sh + +# +# Copyright © 2015 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/Java-Kompendium/kap17/gradlew.bat b/Java-Kompendium/kap17/gradlew.bat new file mode 100644 index 0000000..e509b2d --- /dev/null +++ b/Java-Kompendium/kap17/gradlew.bat @@ -0,0 +1,93 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/Java-Kompendium/kap17/src/main/java/ButtonAnzeigen.java b/Java-Kompendium/kap17/src/main/java/ButtonAnzeigen.java new file mode 100644 index 0000000..5dff7da --- /dev/null +++ b/Java-Kompendium/kap17/src/main/java/ButtonAnzeigen.java @@ -0,0 +1,83 @@ +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.control.ScrollPane; +import javafx.scene.layout.BorderPane; +import javafx.scene.layout.VBox; +import javafx.scene.text.Font; +import javafx.scene.text.FontWeight; +import javafx.scene.text.Text; +import javafx.stage.Stage; +import javafx.stage.Modality; +import java.sql.*; + +public class ButtonAnzeigen extends Button { + public ButtonAnzeigen(String text) { + super(text); + } + + public void neuesFenster(Stage hauptfenster) { + String host = "jdbc:hsqldb:mem:mitarbeiter"; + String inhalt = ""; + + try { + Connection verbindung = DriverManager.getConnection(host); + Statement befehl = verbindung.createStatement(); + + String SQL = "SELECT * FROM Mitarbeiter"; + ResultSet rs = befehl.executeQuery(SQL); + int zaehler = 0; + while (rs.next()) { + zaehler++; + inhalt += "Personalnummer: " + rs.getString("persnr") + "\n"; + inhalt += "Nachname: " + rs.getString("name") + "\n"; + inhalt += "Vorname: " + rs.getString("vorname") + "\n"; + inhalt += "Gehalt: " + rs.getString("gehalt") + "\n\n"; + } + if (zaehler == 0) { + inhalt = "Keine Mitarbeiter vorhanden."; + } + } catch (SQLException err) { + inhalt = err.getMessage(); + } + VBox vbox = new VBox(); + Text titel = new Text("Ihr Personal:\n"); + titel.setFont(Font.font("Arial", FontWeight.NORMAL, 14)); + vbox.getChildren().add(titel); + Text ausgabe = new Text(inhalt); + vbox.getChildren().add(ausgabe); + + ScrollPane scrollPane = new ScrollPane(vbox); + scrollPane.setFitToWidth(true); + scrollPane.setPadding(new Insets(10)); + + BorderPane root = new BorderPane(scrollPane); + root.setPadding(new Insets(30)); + + Button btn = new Button("OK"); + btn.setPadding(new Insets(5)); + VBox vbox2 = new VBox(); + vbox2.getChildren().add(btn); + vbox2.setPadding(new Insets(0, 0, 0, 0)); + root.setBottom(vbox2); + + Stage neuesFenster = new Stage(); + neuesFenster.setTitle("Personal anzeigen"); + neuesFenster.initModality(Modality.WINDOW_MODAL); + neuesFenster.initOwner(hauptfenster); + neuesFenster.setX(hauptfenster.getX() + 50); + neuesFenster.setY(hauptfenster.getY() + 50); + Scene scene = new Scene(root, 400, 300); + neuesFenster.setScene(scene); + neuesFenster.show(); + + btn.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + neuesFenster.close(); + } + }); + } +} diff --git a/Java-Kompendium/kap17/src/main/java/ButtonEntfernen.java b/Java-Kompendium/kap17/src/main/java/ButtonEntfernen.java new file mode 100644 index 0000000..702b516 --- /dev/null +++ b/Java-Kompendium/kap17/src/main/java/ButtonEntfernen.java @@ -0,0 +1,89 @@ +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.layout.GridPane; +import javafx.stage.Stage; +import javafx.stage.Modality; +import javafx.scene.control.Label; +import javafx.scene.control.TextField; +import javafx.scene.text.Text; +import javafx.scene.text.Font; +import javafx.scene.text.FontWeight; +import java.sql.*; + +public class ButtonEntfernen extends Button { + public ButtonEntfernen(String text) { + super(text); + } + + public void neuesFenster(Stage hauptfenster) { + GridPane grid = new GridPane(); + grid.setAlignment(Pos.CENTER); + grid.setHgap(10); + grid.setVgap(10); + grid.setPadding(new Insets(10, 10, 10, 10)); + Scene scene = new Scene(grid, 400, 300); + Stage neuesFenster = new Stage(); + neuesFenster.setTitle("Mitarbeiter entfernen"); + neuesFenster.setScene(scene); + neuesFenster.initModality(Modality.WINDOW_MODAL); + neuesFenster.initOwner(hauptfenster); + neuesFenster.setX(hauptfenster.getX() + 50); + neuesFenster.setY(hauptfenster.getY() + 50); + + Text titel = new Text("Geben Sie die Personalnummer des Mitarbeiters ein:"); + titel.setFont(Font.font("Arial", FontWeight.NORMAL, 14)); + grid.add(titel, 0, 0, 2, 1); + + Label persnr = new Label("Personalnummer:"); + grid.add(persnr, 0, 1); + TextField eingabePersnr = new TextField(); + grid.add(eingabePersnr, 1, 1); + + Button btnEntf = new Button("Mitarbeiter entfernen"); + grid.add(btnEntf, 0, 5); + neuesFenster.show(); + + btnEntf.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + int persnr = -1; + boolean richtigeEingabe = false; + try { + persnr = Integer.parseInt(eingabePersnr.getText()); + richtigeEingabe = true; + } catch (NumberFormatException Ausnahme) { + Hinweis.ausgeben(hauptfenster, "Fehlerhafte Eingabe"); + } + if (richtigeEingabe) { + String host = "jdbc:hsqldb:mem:mitarbeiter"; + + try { + Connection verbindung = DriverManager.getConnection(host); + Statement befehl = verbindung.createStatement(); + + String SQL = "SELECT name FROM Mitarbeiter WHERE persnr = " + persnr; + ResultSet rs = befehl.executeQuery(SQL); + int zaehler = 0; + while (rs.next()) { + zaehler++; + } + if (zaehler > 0) { + SQL = "DELETE FROM Mitarbeiter WHERE persnr = " + persnr; + befehl.executeUpdate(SQL); + Hinweis.ausgeben(hauptfenster, "Mitarbeiter erfolgreich entfernt."); + neuesFenster.close(); + } else { + Hinweis.ausgeben(hauptfenster, "Personalnummer nicht vorhanden"); + } + } catch (SQLException err) { + System.out.println(err.getMessage()); + } + } + } + }); + } +} diff --git a/Java-Kompendium/kap17/src/main/java/ButtonGehalt.java b/Java-Kompendium/kap17/src/main/java/ButtonGehalt.java new file mode 100644 index 0000000..30cceba --- /dev/null +++ b/Java-Kompendium/kap17/src/main/java/ButtonGehalt.java @@ -0,0 +1,107 @@ +import java.sql.Statement; +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.ResultSet; +import java.sql.SQLException; + +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.control.Label; +import javafx.scene.control.TextField; +import javafx.scene.layout.GridPane; +import javafx.scene.text.Font; +import javafx.scene.text.FontWeight; +import javafx.scene.text.Text; +import javafx.stage.Modality; +import javafx.stage.Stage; + +public class ButtonGehalt extends Button { + public ButtonGehalt(String text) { + super(text); + } + + public void neuesFenster(Stage hauptfenster) { + GridPane grid = new GridPane(); + grid.setAlignment(Pos.CENTER); + grid.setHgap(10); + grid.setVgap(10); + grid.setPadding(new Insets(10, 10, 10, 10)); + Scene scene = new Scene(grid, 400, 300); + Stage neuesFenster = new Stage(); + neuesFenster.setTitle("Mitarbeiter hinzufügen"); + neuesFenster.setScene(scene); + neuesFenster.initModality(Modality.WINDOW_MODAL); + neuesFenster.initOwner(hauptfenster); + neuesFenster.setX(hauptfenster.getX() + 50); + neuesFenster.setY(hauptfenster.getY() + 50); + + Text titel = new Text("Geben Sie die Daten für die Gehaltsanpassung ein:"); + titel.setFont(Font.font("Arial", FontWeight.NORMAL, 14)); + grid.add(titel, 0, 0, 2, 1); + + Label persnr = new Label("Personalnummer:"); + grid.add(persnr, 0, 1); + TextField eingabePersnr = new TextField(); + grid.add(eingabePersnr, 1, 1); + + Label gehalt = new Label("Gehalt:"); + grid.add(gehalt, 0, 4); + TextField eingabeGehalt = new TextField(); + grid.add(eingabeGehalt, 1, 4); + + Button btnEinf = new Button("Gehalt anpassen"); + grid.add(btnEinf, 0, 5); + neuesFenster.show(); + + btnEinf.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + int persnr = -1; + double gehalt = -1; + boolean richtigeEingabe = false; + + try { + persnr = Integer.parseInt(eingabePersnr.getText()); + gehalt = Double.parseDouble(eingabeGehalt.getText()); + richtigeEingabe = true; + } + catch (NumberFormatException Ausnahme) { + Hinweis.ausgeben(hauptfenster, "Fehlerhafte Eingabe."); + } + if (richtigeEingabe) { + String host = "jdbc:hsqldb:mem:mitarbeiter"; + + try { + Connection verbindung = DriverManager.getConnection(host); + var befehl = verbindung.prepareStatement( + "SELECT name FROM Mitarbeiter WHERE persnr = ?"); + + befehl.setInt(1, persnr); + ResultSet rs = befehl.executeQuery(); + int zaehler = 0; + while (rs.next()) { + zaehler++; + } + if (zaehler > 0) { + befehl = verbindung.prepareStatement( + "UPDATE Mitarbeiter SET gehalt = ? WHERE persnr = ?"); + befehl.setDouble(1, gehalt); + befehl.setInt(2, persnr); + befehl.executeUpdate(); + Hinweis.ausgeben(hauptfenster, "Gehalt erfolgreich angepasst."); + neuesFenster.close(); + } else { + Hinweis.ausgeben(hauptfenster, "Personalnummer nicht vorhanden"); + } + } catch (SQLException err) { + System.out.println(err.getMessage()); + } + } + } + }); + } +} diff --git a/Java-Kompendium/kap17/src/main/java/ButtonHinzufuegen.java b/Java-Kompendium/kap17/src/main/java/ButtonHinzufuegen.java new file mode 100644 index 0000000..9034bec --- /dev/null +++ b/Java-Kompendium/kap17/src/main/java/ButtonHinzufuegen.java @@ -0,0 +1,119 @@ +import java.sql.Statement; +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.ResultSet; +import java.sql.SQLException; + +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.control.Label; +import javafx.scene.control.TextField; +import javafx.scene.layout.GridPane; +import javafx.scene.text.Font; +import javafx.scene.text.FontWeight; +import javafx.scene.text.Text; +import javafx.stage.Modality; +import javafx.stage.Stage; + +public class ButtonHinzufuegen extends Button { + public ButtonHinzufuegen(String text) { + super(text); + } + + public void neuesFenster(Stage hauptfenster) { + GridPane grid = new GridPane(); + grid.setAlignment(Pos.CENTER); + grid.setHgap(10); + grid.setVgap(10); + grid.setPadding(new Insets(10, 10, 10, 10)); + Scene scene = new Scene(grid, 400, 300); + Stage neuesFenster = new Stage(); + neuesFenster.setTitle("Mitarbeiter hinzufügen"); + neuesFenster.setScene(scene); + neuesFenster.initModality(Modality.WINDOW_MODAL); + neuesFenster.initOwner(hauptfenster); + neuesFenster.setX(hauptfenster.getX() + 50); + neuesFenster.setY(hauptfenster.getY() + 50); + + Text titel = new Text("Geben Sie die Daten des neuen Mitarbeiters ein:"); + titel.setFont(Font.font("Arial", FontWeight.NORMAL, 14)); + grid.add(titel, 0, 0, 2, 1); + + Label persnr = new Label("Personalnummer:"); + grid.add(persnr, 0, 1); + TextField eingabePersnr = new TextField(); + grid.add(eingabePersnr, 1, 1); + + Label nachname = new Label("Nachname:"); + grid.add(nachname, 0, 2); + TextField eingabeNachname = new TextField(); + grid.add(eingabeNachname, 1, 2); + + Label vorname = new Label("Vorname:"); + grid.add(vorname, 0, 3); + TextField eingabeVorname = new TextField(); + grid.add(eingabeVorname, 1, 3); + + Label gehalt = new Label("Gehalt:"); + grid.add(gehalt, 0, 4); + TextField eingabeGehalt = new TextField(); + grid.add(eingabeGehalt, 1, 4); + + Button btnEinf = new Button("Mitarbeiter hinzufügen"); + grid.add(btnEinf, 0, 5); + neuesFenster.show(); + + btnEinf.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + String vorname = ""; + String nachname = ""; + int persnr = -1; + double gehalt = -1; + boolean richtigeEingabe = false; + + try { + vorname = eingabeVorname.getText(); + nachname = eingabeNachname.getText(); + persnr = Integer.parseInt(eingabePersnr.getText()); + gehalt = Double.parseDouble(eingabeGehalt.getText()); + richtigeEingabe = true; + } + catch (NumberFormatException Ausnahme) { + Hinweis.ausgeben(hauptfenster, "Fehlerhafte Eingabe."); + } + if (richtigeEingabe) { + String host = "jdbc:hsqldb:mem:mitarbeiter"; + + try { + Connection verbindung = DriverManager.getConnection(host); + Statement befehl = verbindung.createStatement(); + + String SQL = "SELECT name FROM Mitarbeiter WHERE persnr = " + persnr; + ResultSet rs = befehl.executeQuery(SQL); + int zaehler = 0; + while (rs.next()) { + zaehler++; + } + if (zaehler == 0) { + SQL = "INSERT INTO Mitarbeiter (persnr, name, vorname," + + "gehalt) VALUES (" + persnr + ", '" + + nachname + "', '" + vorname + "', " + gehalt + ")"; + befehl.executeUpdate(SQL); + Hinweis.ausgeben(hauptfenster, "Mitarbeiter erfolgreich hinzufgefügt."); + neuesFenster.close(); + } else { + Hinweis.ausgeben(hauptfenster, "Personalnummer bereits vergeben"); + } + } catch (SQLException err) { + System.out.println(err.getMessage()); + } + } + } + }); + } +} diff --git a/Java-Kompendium/kap17/src/main/java/Hauptfenster.java b/Java-Kompendium/kap17/src/main/java/Hauptfenster.java new file mode 100644 index 0000000..48839e5 --- /dev/null +++ b/Java-Kompendium/kap17/src/main/java/Hauptfenster.java @@ -0,0 +1,104 @@ +import java.sql.*; + +import javafx.application.Application; +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.HPos; +import javafx.geometry.Insets; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.layout.GridPane; +import javafx.scene.text.Font; +import javafx.scene.text.FontWeight; +import javafx.scene.text.Text; +import javafx.stage.Stage; + +public class Hauptfenster extends Application { + @Override + public void start(Stage stage) throws SQLException { + String host = "jdbc:hsqldb:mem:mitarbeiter"; + + Connection verbindung = DriverManager.getConnection(host); + Statement befehl = verbindung.createStatement(); + String SQL = """ + CREATE TABLE Mitarbeiter ( + persnr INTEGER Primary Key Not Null, + name VARCHAR(30), + vorname VARCHAR(30), + gehalt DECIMAL(9,2) + ) + """; + befehl.executeUpdate(SQL); + + GridPane grid = new GridPane(); + grid.setAlignment(Pos.CENTER); + grid.setHgap(30); + grid.setVgap(50); + grid.setPadding(new Insets(20, 20, 20, 20)); + stage.setTitle("Personalverwaltung"); + Text titel = new Text("Wählen Sie eine Aktion aus:"); + titel.setFont(Font.font("Arial", FontWeight.BOLD, 14)); + grid.add(titel, 0, 0, 2, 1); + + ButtonHinzufuegen btn1 = new ButtonHinzufuegen("Mitarbeiter hinzufügen"); + grid.add(btn1, 0, 1); + btn1.setPrefSize(200, 50); + + ButtonEntfernen btn2 = new ButtonEntfernen("Mitarbeiter entfernen"); + grid.add(btn2, 1, 1); + btn2.setPrefSize(200, 50); + + ButtonGehalt btn3 = new ButtonGehalt("Gehalt anpassen"); + grid.add(btn3, 0, 2); + btn3.setPrefSize(200, 50); + + ButtonAnzeigen btn4 = new ButtonAnzeigen("Personal anzeigen"); + grid.add(btn4, 1, 2); + btn4.setPrefSize(200, 50); + + Button btn5 = new Button("OK"); + grid.add(btn5, 0, 3, 2, 1); + btn5.setPrefSize(100, 20); + GridPane.setHalignment(btn5, HPos.CENTER); + + btn1.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + btn1.neuesFenster(stage); + } + }); + btn2.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + btn2.neuesFenster(stage); + } + }); + btn3.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + btn3.neuesFenster(stage); + } + }); + btn4.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + btn4.neuesFenster(stage); + } + }); + btn5.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + stage.close(); + } + }); + + Scene scene = new Scene(grid, 600, 400); + stage.setScene(scene); + stage.show(); + } + + public static void main(String[] args) { + launch(args); + } +} diff --git a/Java-Kompendium/kap17/src/main/java/Hinweis.java b/Java-Kompendium/kap17/src/main/java/Hinweis.java new file mode 100644 index 0000000..0cf2766 --- /dev/null +++ b/Java-Kompendium/kap17/src/main/java/Hinweis.java @@ -0,0 +1,39 @@ +import javafx.event.ActionEvent; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.geometry.Pos; +import javafx.scene.Scene; +import javafx.scene.control.Button; +import javafx.scene.control.Label; +import javafx.scene.layout.GridPane; +import javafx.stage.Modality; +import javafx.stage.Stage; + +public class Hinweis { + public static void ausgeben(Stage fenster, String text) { + GridPane grid = new GridPane(); + grid.setAlignment(Pos.CENTER); + grid.setHgap(10); + grid.setVgap(10); + grid.setPadding(new Insets(10, 10, 10, 10)); + + Scene scene = new Scene(grid, 300, 200); + Label label = new Label(text); + Button btn = new Button("OK"); + grid.add(label, 0, 0); + grid.add(btn, 0, 1); + Stage hinweisfenster = new Stage(); + hinweisfenster.initModality(Modality.WINDOW_MODAL); + hinweisfenster.initOwner(fenster); + hinweisfenster.setX(fenster.getX() + 30); + hinweisfenster.setY(fenster.getY() + 30); + hinweisfenster.setScene(scene); + hinweisfenster.show(); + btn.setOnAction(new EventHandler() { + @Override + public void handle(ActionEvent e) { + hinweisfenster.close(); + } + }); + } +} diff --git a/Java-Kompendium/kap7/Task1.java b/Java-Kompendium/kap7/Task1.java new file mode 100644 index 0000000..7ded5b7 --- /dev/null +++ b/Java-Kompendium/kap7/Task1.java @@ -0,0 +1,17 @@ +import java.io.*; + +public class Task1 { + public static void main(String[] args) throws IOException { + var stream = new InputStreamReader(System.in); + var buffered = new BufferedReader(stream); + + System.out.print("Geben Sie Ihren Namen ein: "); + var name = buffered.readLine().strip(); + + if (name.equals("Paul")) { + System.out.println("Willkommen Paul"); + } else { + System.out.println("Zugriff verweigert für " + name); + } + } +} diff --git a/Java-Kompendium/kap7/Task2.java b/Java-Kompendium/kap7/Task2.java new file mode 100644 index 0000000..11b66a7 --- /dev/null +++ b/Java-Kompendium/kap7/Task2.java @@ -0,0 +1,20 @@ +import java.io.*; + +public class Task2 { + public static void main(String[] args) throws IOException { + var stream = new InputStreamReader(System.in); + var buffered = new BufferedReader(stream); + + System.out.print("Geben Sie Ihren Namen ein: "); + var name = buffered.readLine().strip(); + + System.out.print("Geben Sie Ihr Passwort ein: "); + var password = buffered.readLine().strip(); + + if ((name.equals("Paul") || name.equals("paul")) && password.equals("123")) { + System.out.println("Willkommen Paul"); + } else { + System.out.println("Zugriff verweigert für " + name + " mit " + password); + } + } +} diff --git a/Java-Kompendium/kap7/Task3.java b/Java-Kompendium/kap7/Task3.java new file mode 100644 index 0000000..6902488 --- /dev/null +++ b/Java-Kompendium/kap7/Task3.java @@ -0,0 +1,51 @@ +import java.io.*; + +public class Task3 { + public static void main(String[] args) throws IOException { + var stream = new InputStreamReader(System.in); + var buffered = new BufferedReader(stream); + + System.out.print("Geben Sie eine Zahl zwischen 1 und 12 ein: "); + var input = buffered.readLine(); + var number = Integer.parseInt(input); + + switch (number) { + case 1: + System.out.println("Januar"); + break; + case 2: + System.out.println("Februar"); + break; + case 3: + System.out.println("März"); + break; + case 4: + System.out.println("April"); + break; + case 5: + System.out.println("Mai"); + break; + case 6: + System.out.println("Juni"); + break; + case 7: + System.out.println("Juli"); + break; + case 8: + System.out.println("August"); + break; + case 9: + System.out.println("September"); + break; + case 10: + System.out.println("Oktober"); + break; + case 11: + System.out.println("November"); + break; + case 12: + System.out.println("Dezember"); + break; + } + } +} diff --git a/Java-Kompendium/kap8/Task1.java b/Java-Kompendium/kap8/Task1.java new file mode 100644 index 0000000..870cee4 --- /dev/null +++ b/Java-Kompendium/kap8/Task1.java @@ -0,0 +1,22 @@ +import java.io.*; +import java.util.ArrayList; + +public class Task1 { + public static void main(String[] arguments) throws IOException { + String answer = "j"; + var stream = new InputStreamReader(System.in); + var buffered = new BufferedReader(stream); + var names = new ArrayList(); + + while (answer.equals("j")) { + System.out.println("Geben Sie einen Namen ein:"); + names.add(buffered.readLine().strip()); + + System.out.println("Möchten sie fortsetzen? (j/n)"); + answer = buffered.readLine().strip(); + } + for (var name : names) { + System.out.println(name); + } + } +} diff --git a/Java-Kompendium/kap8/Task2.java b/Java-Kompendium/kap8/Task2.java new file mode 100644 index 0000000..de14b26 --- /dev/null +++ b/Java-Kompendium/kap8/Task2.java @@ -0,0 +1,11 @@ +import java.io.*; + +public class Task2 { + public static void main(String[] arguments) throws IOException { + for (int i = 20; i >= 0; i = i - 2) { + System.out.print(i); + System.out.print(' '); + } + System.out.println(); + } +} diff --git a/Java-Kompendium/kap8/Task3.java b/Java-Kompendium/kap8/Task3.java new file mode 100644 index 0000000..97c92ba --- /dev/null +++ b/Java-Kompendium/kap8/Task3.java @@ -0,0 +1,21 @@ +import java.io.*; +import java.util.HashMap; +import java.util.Map; + +public class Task3 { + public static void main(String[] arguments) throws IOException { + var friends = new HashMap(); + + friends.put("Maximilian Mayer", 20); + friends.put("Emil Faber", 30); + friends.put("Anna Müller", 45); + friends.put("Sebastian Waller", 39); + friends.put("Oliver Stilz", 25); + + for (Map.Entry name: friends.entrySet()) { + System.out.print(name.getKey()); + System.out.print(": "); + System.out.println(name.getValue()); + } + } +} diff --git a/Java-Kompendium/kap9/Coworker.java b/Java-Kompendium/kap9/Coworker.java new file mode 100644 index 0000000..ef34859 --- /dev/null +++ b/Java-Kompendium/kap9/Coworker.java @@ -0,0 +1,10 @@ +public class Coworker { + public String firstName; + public String lastName; + public String number; + public int salary; + + public void increase(int percent) { + this.salary += (salary / 100) * percent; + } +} diff --git a/Java-Kompendium/kap9/Task.java b/Java-Kompendium/kap9/Task.java new file mode 100644 index 0000000..d4d57ea --- /dev/null +++ b/Java-Kompendium/kap9/Task.java @@ -0,0 +1,29 @@ +import java.io.*; + +public class Task { + public static void main(String[] arguments) { + var coworker = new Coworker(); + + coworker.firstName = "Sebastian"; + coworker.lastName = "Mayer"; + coworker.number = "1234"; + coworker.salary = 3000; + + System.out.print("Vorname: "); + System.out.println(coworker.firstName); + + System.out.print("Nachname: "); + System.out.println(coworker.lastName); + + System.out.print("Personalnummer: "); + System.out.println(coworker.number); + + System.out.print("Monatslohn: "); + System.out.println(coworker.salary); + + coworker.increase(5); + + System.out.print("Monatslohn erhöht um 5%: "); + System.out.println(coworker.salary); + } +}