Java 显示多张图片

[xunyi001]

如何在Java界面上同时显示多张图片？我用了继承Thread类，结果发现显示时候屏幕很闪，怎么办，有没有更好的办法？或者如何解决这个问题？

public class SolarSystem extends JFrame{
		
	public void lode(){
		new PaintThread().start();
	}
	Image sun = Toolkit.getDefaultToolkit().getImage("image/sun.jpg");
	Image earth = Toolkit.getDefaultToolkit().getImage("image/earth.jpg");	

	public void paint(Graphics g){
		g.setColor(Color.blue);
		g.drawImage(backGround , 0 , 0 , null);
		g.drawImage(sun , 435 , 275 , null);
		
		t = t + Math.PI / 36.5;
		t1 = t + Math.PI / 0.1;
		
		g.drawOval(120, 145, 600, 400);
		g.drawImage(earth , (int)x ,(int)y, null);
		x = 375 + 300 * Math.cos(t);
		y = 285 + 200 * Math.sin(t);
		}
	
	
	public static void main(String[] args){
		int x_size, y_size;       //横纵坐标
		x_size = (int) (Toolkit.getDefaultToolkit().getScreenSize().getWidth());
        y_size = (int) (Toolkit.getDefaultToolkit().getScreenSize().getHeight());
        
        SolarSystem solarSystem = new SolarSystem();
        solarSystem.setSize(900, 800);
        solarSystem.setLocation((x_size - 800) / 2, (y_size - 780) / 2);
        solarSystem.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);	
        solarSystem.setVisible(true);
		//earth.setResizable(false);
        
        solarSystem.lode();
    }
	
	private class PaintThread extends Thread{
		public void run(){
			while(true){
				repaint();
				try {
					Thread.sleep(20);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	}
}

[sainer]

双缓冲啊...

[xunyi001]

双缓冲怎么弄，能否解释下

[tnjun123456]

private Image offScreenImage = null;
protected static final int WIN_WIDTH = 800;
protected static final int WIN_HEIGHT = 600;
@Override
public void update(Graphics g) {
if (offScreenImage == null) {
offScreenImage = this.createImage(WIN_WIDTH, WIN_HEIGHT);
}
Graphics gOffScreen = offScreenImage.getGraphics();
Color c = gOffScreen.getColor();
gOffScreen.setColor(Color.BLACK);
gOffScreen.fillRect(0, 0, WIN_WIDTH, WIN_HEIGHT);
gOffScreen.setColor(c);
paint(gOffScreen);
g.drawImage(offScreenImage, 0, 0, null);
}

[huntor]

继承 JPanel，在 paintComponent方法里绘制。使用 javax.swing.Timer 定时更新。
然后 加到 JFrame里。

继承 JFrame 重写 paint 还是 awt的思路。swing不同了