Initial commit

Main.java

@@ -0,0 +1,19 @@
+import java.util.concurrent.*;
+
+public class Main implements Runnable, Callable<Integer> {
+    private static final String message = "Hello, World";
+    private static final int number = 42;
+    private static final double funnyNumber = 6.9;
+
+    public static void main() {
+        System.out.println(message);
+    }
+    
+    public void run() {
+        Main.main();
+    }
+    
+    public Integer call() {
+        return number;
+    }
+}