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987天前import java.awt.*; |
import java.awt.event.*; |
import javax.swing.*; |
public class TankClient extends Frame { |
int x= 50, y=50; |
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Image offScreenImage =null; |
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public void paint(Graphics g) |
{ |
Color c=g.getColor(); |
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g.setColor(Color.RED); |
g.fillOval(x, y, 30, 30); |
g.setColor(c); |
y += 5; |
System.out.println("hello"); |
} |
public void update(Graphics g) |
{ |
if(offScreenImage==null) |
{ |
offScreenImage=this.createImage(800, 600); |
} |
Graphics gOffScreen=offScreenImage.getGraphics(); |
Color c=gOffScreen.getColor(); |
gOffScreen.setColor(Color.GREEN); |
gOffScreen.fillRect(0, 0, 800, 600); |
gOffScreen.setColor(c); |
paint(gOffScreen); |
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g.drawImage(offScreenImage, 0, 0, null); |
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} |
public void lauchFram() |
{ |
this.setLocation(400, 300); |
this.setSize(800,600); |
this.setTitle("TankWar"); |
//匿名类 |
this.addWindowListener(new WindowAdapter() |
{ |
public void windowClosing(WindowEvent e) { |
System.exit(0); |
} |
}); |
this.setResizable(false); |
this.setBackground(Color.GREEN); |
setVisible(true); |
new Thread(new PaintThread()).start(); |
} |
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public static void main(String[] args) { |
TankClient tc=new TankClient(); |
tc.lauchFram(); |
} |
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private class PaintThread implements Runnable |
{ |
public void run() |
{ |
while(true) |
{ |
//调用paint |
repaint(); |
try { |
Thread.sleep(20); |
} catch (InterruptedException e) { |
e.printStackTrace(); |
} |
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} |
} |
} |
} |
