// package whatever; // don't place package name!
import java.io.*;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;


class MyCode {
  public static void main (String[] args) {
    System.out.println("Hello Java");

    Point3D p = new Point3D(1, 2, 3);
    p.print();
//     Class c = p.getClass();
    Class c = Point3D.class;
//     Class c = Class.forName("");
    //Field f = c.getDeclaredField("x");
    //f[1].setAccesable(true);
    try {
      Method m = c.getDeclaredMethod("print");
      m.invoke(p);
    } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {}
  }

//   @Annotation
  public static class Point {
    int x;
    int y;

    public Point(int x, int y) {
      this.x = x;
      this.y = y;
    }

    public void print() {
            System.out.println(x + " " + y);
    }
  }

//   @Annotatoin
  public static class Point3D extends Point {
    int z;

    public Point3D(int x, int y, int z) {
      super(x, y);
      this.z = z;
    }

    @Override
//     @Annotation(str2 = "Test1")
//     @Annotation1(@Annotation)
//     @Annotation(str2 = "Check")
    public void print() {
      System.out.println(x + " " + y + " " + z);
    }
  }

//   @Retention(RetentionPolicy.RUNTIME)
// //   @Target(ElementType.METHOD)
//   @Inherited
//   public @interface Annotation {
//  String str1() default
//     String str2() default "";
//   }

//   public @interface Annotation1 {
//     Annotaion value();
//   }
}