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Add chapters 9-17 for the java book

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This commit is contained in:
Eugen Wissner
2025-12-01 14:14:57 +01:00
parent a680b83e47
commit 2da137aea8
54 changed files with 3063 additions and 0 deletions
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5
Java-Kompendium/.gitignore vendored
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*.class
build/
.gradle/
.classpath
.project
.settings

20
Java-Kompendium/kap11/Task1.java Normal file
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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;
}
}
}

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Java-Kompendium/kap11/Task2.java Normal file
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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);
}
}

0
Java-Kompendium/kap14/1/Notizen.txt Normal file
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Java-Kompendium/kap14/1/build.gradle Normal file
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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'
}

2
Java-Kompendium/kap14/1/gradle/libs.versions.toml Normal file
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# This file was generated by the Gradle 'init' task.
# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format

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Java-Kompendium/kap14/1/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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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

248
Java-Kompendium/kap14/1/gradlew vendored Executable file
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#!/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 "$JAVACMD" "$@"

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Java-Kompendium/kap14/1/gradlew.bat vendored Normal file
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@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

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Java-Kompendium/kap14/1/src/main/java/EnterHandler.java Normal file
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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<ActionEvent> {
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("");
}
}

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Java-Kompendium/kap14/1/src/main/java/Task1.java Normal file
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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();
}
}
}

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Java-Kompendium/kap14/2/Task2.java Normal file
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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());
}
}
}

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Java-Kompendium/kap15/build.gradle Normal file
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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'
}

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Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.jar vendored Normal file
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Java-Kompendium/kap15/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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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

248
Java-Kompendium/kap15/gradlew vendored Executable file
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#!/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 "$JAVACMD" "$@"

93
Java-Kompendium/kap15/gradlew.bat vendored Normal file
View File

@@ -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

36
Java-Kompendium/kap15/src/main/java/Mark.java Normal file
View File

@@ -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();
}
}

127
Java-Kompendium/kap15/src/main/java/Marks.java Normal file
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@@ -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<Mark>();
try {
var handler = new SearchAction(this.connection, this.status, field);
table.setItems(handler.getMarks());
var subjectColumn = new TableColumn<Mark, String>("Fach");
subjectColumn.setCellValueFactory(
new PropertyValueFactory<>("subject" /* handler.getMarks().get(0).subjectProperty().getName() */)
);
var markColumn = new TableColumn<Mark, Integer>("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());
}
}
}

50
Java-Kompendium/kap15/src/main/java/SaveAction.java Normal file
View File

@@ -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<ActionEvent> {
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());
}
}
}

44
Java-Kompendium/kap15/src/main/java/SearchAction.java Normal file
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@@ -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<ActionEvent> {
private Text status;
private TextField field;
private PreparedStatement statement;
private ObservableList<Mark> 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<Mark> getMarks() {
return this.marks;
}
}

17
Java-Kompendium/kap16/1/build.gradle Normal file
View File

@@ -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'
}

10
Java-Kompendium/kap16/1/gradle/libs.versions.toml Normal file
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@@ -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" }

BIN
Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.jar vendored Normal file
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7
Java-Kompendium/kap16/1/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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@@ -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

248
Java-Kompendium/kap16/1/gradlew vendored Executable file
View File

@@ -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 "$JAVACMD" "$@"

93
Java-Kompendium/kap16/1/gradlew.bat vendored Normal file
View File

@@ -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

21
Java-Kompendium/kap16/1/src/main/java/App.java Normal file
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@@ -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();
}
}

17
Java-Kompendium/kap16/2/build.gradle Normal file
View File

@@ -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'
}

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Java-Kompendium/kap16/2/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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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

234
Java-Kompendium/kap16/2/gradlew vendored Executable file
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#!/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 "$JAVACMD" "$@"

89
Java-Kompendium/kap16/2/gradlew.bat vendored Normal file
View File

@@ -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

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Java-Kompendium/kap16/2/src/main/java/HelloFX.java Normal file
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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<ActionEvent>() {
@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<ActionEvent>() {
@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<ActionEvent>() {
@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();
}
}

25
Java-Kompendium/kap17/build.gradle Normal file
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@@ -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'
}

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Java-Kompendium/kap17/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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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

248
Java-Kompendium/kap17/gradlew vendored Executable file
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#!/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 "$JAVACMD" "$@"

93
Java-Kompendium/kap17/gradlew.bat vendored Normal file
View File

@@ -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

83
Java-Kompendium/kap17/src/main/java/ButtonAnzeigen.java Normal file
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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<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
neuesFenster.close();
}
});
}
}

89
Java-Kompendium/kap17/src/main/java/ButtonEntfernen.java Normal file
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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<ActionEvent>() {
@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());
}
}
}
});
}
}

107
Java-Kompendium/kap17/src/main/java/ButtonGehalt.java Normal file
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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<ActionEvent>() {
@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());
}
}
}
});
}
}

119
Java-Kompendium/kap17/src/main/java/ButtonHinzufuegen.java Normal file
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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<ActionEvent>() {
@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());
}
}
}
});
}
}

104
Java-Kompendium/kap17/src/main/java/Hauptfenster.java Normal file
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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<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
btn1.neuesFenster(stage);
}
});
btn2.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
btn2.neuesFenster(stage);
}
});
btn3.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
btn3.neuesFenster(stage);
}
});
btn4.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
btn4.neuesFenster(stage);
}
});
btn5.setOnAction(new EventHandler<ActionEvent>() {
@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);
}
}

39
Java-Kompendium/kap17/src/main/java/Hinweis.java Normal file
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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<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
hinweisfenster.close();
}
});
}
}

17
Java-Kompendium/kap7/Task1.java Normal file
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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);
}
}
}

20
Java-Kompendium/kap7/Task2.java Normal file
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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);
}
}
}

51
Java-Kompendium/kap7/Task3.java Normal file
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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;
}
}
}

22
Java-Kompendium/kap8/Task1.java Normal file
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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<String>();
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);
}
}
}

11
Java-Kompendium/kap8/Task2.java Normal file
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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();
}
}

21
Java-Kompendium/kap8/Task3.java Normal file
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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<String, Integer>();
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<String, Integer> name: friends.entrySet()) {
System.out.print(name.getKey());
System.out.print(": ");
System.out.println(name.getValue());
}
}
}

10
Java-Kompendium/kap9/Coworker.java Normal file
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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;
}
}

29
Java-Kompendium/kap9/Task.java Normal file
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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);
}
}