Put testsuite in its own directory

testsuite/classes/java/Main.java

@@ -0,0 +1,41 @@
+import java.util.function.Supplier;
+
+@CustomAttribute
+public class Main implements Runnable, Supplier<Integer>, Interface {
+    private static final String name = "John";
+    private static final int number = 42;
+    private static final double funnyNumber = 6.9;
+
+    public static void main() {
+        new Main().sayHello();
+    }
+    
+    @Override
+    public void run() {
+        Main.main();
+    }
+    
+    @Override
+    public Integer get() {
+        return number;
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    public void throwSomething() throws Throwable {
+        throw new Throwable() {
+            @Override
+            public String getMessage() {
+                return "Hello";
+            }
+        };
+    }
+
+    public static class Inner {
+        private static final String name = "Inner John";
+    }
+}
+