Pong in Java (HOME)

package com.samkough.pong.main;

import javax.swing.JFrame;
import java.awt.Color;
import java.awt.Graphics;
import com.samkough.pong.entity.Ball;
import com.samkough.pong.entity.Paddle;

public class Pong extends JFrame
{
	private static final int WIDTH = 400;
	private static final int HEIGHT = 400;

	Ball b = new Ball();
	Paddle p1 = new Paddle();
	Paddle p2 = new Paddle();

	protected int x;
	protected int y;


	public Pong()
	{
		b.setSize(30, 30);
		b.setColor(Color.BLUE);
		b.setX(20);
		b.setY(20);

		p1.setSize(40, 40);
		p1.setColor(Color.RED);
		p1.setX(50);
		p1.setY(50);

		p2.setSize(40, 40);
		p2.setColor(Color.RED);
		p2.setX(100);
		p2.setY(100);

		add(b);
		add(p1);
		add(p2);
		getContentPane().repaint();
	}


	public void paint(Graphics g)
	{

	}

	public void setColor(Color c)
	{

	}

	public boolean collides(boolean a)
	{
		return a;
	}

	public void setSize(int width, int height)
	{

	}

	public void setX(int xn)
	{
		x = xn;
	}

	public void setY(int yn)
	{
		y = yn;
	}

	public int getX()
	{
		return x;
	}

	public int getY()
	{
		return y;
	}


	public static void main(String args[])
	{
		Pong frame = new Pong();
		frame.setSize(WIDTH, HEIGHT);
		frame.setTitle("Pong");
		frame.setResizable(false);
		frame.setVisible(true);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}
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package com.samkough.pong.entity;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.*;

import com.samkough.pong.main.Pong;

public class Paddle extends Pong implements KeyListener
{
	public Paddle()
	{
		/*
		p1.setColor(Color.RED);
		p1.setX(50);
		p1.setY(50);

		p2.setSize(40, 40);
		p2.setColor(Color.RED);
		p2.setX(100);
		p2.setY(100);
		*/
	}

	public void paint(Graphics g)
	{

	}

	public void setColor(Color c)
	{

	}

	public void setSize(int width, int height)
	{

	}

	public void setX(int i)
	{
		x = i;
	}

	public void setY(int i)
	{
		y = i;
	}

	public int getX()
	{
		return x;
	}

	public int getY()
	{
		return y;
	}

	public void keyPressed(KeyEvent e)
	{

	}

	public void keyReleased(KeyEvent e)
	{

	}

	public void keyTyped(KeyEvent e)
	{

	}

}

-----------------------------------------------------------------------------------------------------------------------------------
package com.samkough.pong.entity;

import java.awt.Color;
import java.awt.Graphics;

import com.samkough.pong.main.Pong;

public class Ball extends Pong
{
	public Ball()
	{
		/*
		b.setSize(30, 30);
		b.setColor(Color.BLUE);
		b.setX(20);
		b.setY(20);
		*/
	}

	public void paint(Graphics g)
	{

	}

	public void setColor(Color c)
	{

	}

	public void setSize(int width, int height)
	{

	}

	public void setX(int i)
	{
		x = i;
	}

	public void setY(int i)
	{
		y = i;
	}

	public int getX()
	{
		return x;
	}

	public int getY()
	{
		return y;
	}
}