Add Java-Kompendium book

Java-Kompendium/kap5/Task1.java

@@ -0,0 +1,10 @@
+public class Task1 {
+    public static void main(String[] args) {
+        int x;
+        short y = 8;
+        long z;
+
+        x = y;
+        z = y;
+    }
+}