Java 게임을 개발하고 있는데 JPanel을 JFrame에 추가해서 Thread를 이용하려고 합니다.

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Toolkit;
 
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.OverlayLayout;
 
import shade.frame.screen.BackGroundManager;
import shade.frame.screen.Menu;
 
public class Frame extends JFrame implements Runnable{
 
	Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
	final private int screenW = screen.width, screenH = screen.height;
	final private int width = screenW / 4, height = screenH;
	BackGroundManager bgmanager = new BackGroundManager();
	JPanel background = new JPanel();
	JPanel menu = new Menu();
 
	public Frame() throws InterruptedException {
		frameSetting("shade...");
 
		//this.setLayout(new OverlayLayout(bgmanager));
 
		bgmanager.setLayout(new OverlayLayout(bgmanager));
		add(bgmanager);
 
 
		//menu.setBackground(Color.black);
		menu.setPreferredSize(new Dimension(100,100));
		bgmanager.add(menu);
		//add(menu, BorderLayout.NORTH);
 
		//background.add(bgmanager);
		//background.setPreferredSize(new Dimension(400, 400));
		//add(background, BorderLayout.CENTER);
 
		this.setVisible(true);
		render();
	}
 
	public void frameSetting(String title) {
		this.setTitle(title);
		this.setSize(width, height);
		this.setResizable(false);
		this.setLocationRelativeTo(null);
		this.getContentPane().setLayout(new BorderLayout());
	}
 
	public void render() throws InterruptedException {
 
		while (true) {
			//스레드로 분리해서 실행시켜야 할 것 같다
			bgmanager.repaint();
			bgmanager.backGroundMove(width, height);
			menu.repaint();
 
 
		}
 
	}
 
	@Override
	public void run() {
 
	}
}