Add Java-Kompendium book

3 files changed, 81 insertions, 0 deletions

diff --git a/Java-Kompendium/kap6/Task1.java b/Java-Kompendium/kap6/Task1.java
new file mode 100644
index 0000000..9861d6f
--- /dev/null
+++ b/Java-Kompendium/kap6/Task1.java
@@ -0,0 +1,37 @@
+import java.util.*;
+
+public class Task1 {
+    public static void main(String[] args) {
+        ArrayList<String> workers = new ArrayList<>(6);
+
+        workers.add("Maximilian Mayer");
+        workers.add("Emil Faber");
+        workers.add("Anna Müller");
+        workers.add("Sebastian Waller");
+        workers.add("Oliver Stilz");
+        workers.add("Peter Huber");
+
+        print(workers);
+        System.out.println();
+
+        System.out.print("Der erste Name: ");
+        System.out.println(workers.get(0));
+
+        System.out.print("Der letzte Name: ");
+        System.out.println(workers.get(workers.size() - 1));
+
+        workers.set(3, "Frank Starke");
+
+        System.out.println();
+        print(workers);
+    }
+
+    public static void print(ArrayList<String> list) {
+        System.out.println(list.get(0));
+        System.out.println(list.get(1));
+        System.out.println(list.get(2));
+        System.out.println(list.get(3));
+        System.out.println(list.get(4));
+        System.out.println(list.get(5));
+    }
+}
diff --git a/Java-Kompendium/kap6/Task2.java b/Java-Kompendium/kap6/Task2.java
new file mode 100644
index 0000000..bbec0a0
--- /dev/null
+++ b/Java-Kompendium/kap6/Task2.java
@@ -0,0 +1,15 @@
+import java.util.*;
+import java.io.*;
+
+public class Task2 {
+    public static void main(String[] args) throws IOException {
+        var workers = new ArrayList<String>();
+        var stream = new InputStreamReader(System.in);
+        var bufferedStream = new BufferedReader(stream);
+
+        for (int i = 0; i < 5; ++i) {
+            workers.add(bufferedStream.readLine());
+        }
+        System.out.println("Folgende Mitarbeiter haben sie angegeben: " + workers);
+    }
+}
diff --git a/Java-Kompendium/kap6/Task3.java b/Java-Kompendium/kap6/Task3.java
new file mode 100644
index 0000000..88266fd
--- /dev/null
+++ b/Java-Kompendium/kap6/Task3.java
@@ -0,0 +1,29 @@
+import java.util.*;
+
+public class Task3 {
+    public static void main(String[] args) {
+        var javaList = new HashSet<String>(3);
+        var pythonList = new HashSet<String>(3);
+        var commonList = new HashSet<String>();
+        var differenceSet = new HashSet<String>();
+
+        javaList.add("Maximilian Mayer");
+        javaList.add("Emil Faber");
+        javaList.add("Anna Müller");
+
+        pythonList.add("Anna Müller");
+        pythonList.add("Sebastian Waller");
+        pythonList.add("Oliver Stilz");
+
+        commonList.addAll(javaList);
+        commonList.addAll(pythonList);
+
+        differenceSet.addAll(javaList);
+        differenceSet.retainAll(pythonList);
+
+        System.out.println("Java-Kurs: " + javaList);
+        System.out.println("Python-Kurs: " + pythonList);
+        System.out.println("Alle Teilnehmer: " + commonList);
+        System.out.println("Beide Kurse: " + differenceSet);
+    }
+}