Finish Java Kompendium book

1 files changed, 20 insertions, 0 deletions

diff --git a/Java-Kompendium/kap21/Task2.java b/Java-Kompendium/kap21/Task2.java
new file mode 100644
index 0000000..8a10577
--- /dev/null
+++ b/Java-Kompendium/kap21/Task2.java
@@ -0,0 +1,20 @@
+import java.util.HashSet;
+import java.util.HashSet;
+
+public class Task2 {
+    public static void main(String[] arguments) {
+        var set = new HashSet<Integer>();
+
+        set.add(1);
+        set.add(3);
+        set.add(5);
+        set.add(7);
+        set.add(9);
+        set.add(11);
+        set.add(15);
+        set.add(20);
+        set.add(21);
+
+        set.forEach(v -> System.out.println(v * 2));
+    }
+}