From a680b83e47a283106dee9557c5c9ee5dc175551e Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Mon, 24 Nov 2025 23:20:51 +0100
Subject: Add Java-Kompendium book

---
 Java-Kompendium/kap6/Task3.java | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Java-Kompendium/kap6/Task3.java

(limited to 'Java-Kompendium/kap6/Task3.java')

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);
+    }
+}
-- 
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