1.整體的結構圖：

2.編寫GameFrame.java的代碼：

package cn.bjsxt.test;

import java.awt.Color;

import java.awt.Font;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

public class GameFrame extends Frame {

Image image = GameUtil.getImage("images/sun.jpg");

public void launchFrame() {

setSize(500, 500);

setLocation(100, 100);

setVisible(true);

new PaintThread().start();

addWindowListener(new WindowAdapter() {

// 單擊右鍵選擇“source”中的“override/implement

// methods”，frame里面勾選“windowClosed”點擊“OK”

@Override

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

}

private double x = 100, y = 100;

// 單擊右鍵選擇“source”中的“override/implement

// methods”，window里面勾選“paint(graphic)”點擊“OK”

@Override

public void paint(Graphics g) {

System.out.println("paint!!!");

g.drawLine(100, 100, 200, 200);

g.drawRect(100, 100, 200, 200);

g.drawOval(100, 100, 200, 200);

Font f = new Font("宋體", Font.BOLD, 30);

g.setFont(f);

g.drawString("第一次畫圖", 200, 200);

g.fillRect(100, 100, 20, 20);

Color c = g.getColor();

g.setColor(Color.red);

g.fillOval(300, 300, 20, 20);

g.setColor(c);

g.drawImage(image, (int) x, (int) y, null);

x += 3;

y += 3;

}

class PaintThread extends Thread {

public void run() {

while (true) {

repaint();

try {

Thread.sleep(40);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

public static void main(String[] args) {

GameFrame gf = new GameFrame();

gf.launchFrame();

}

}

3.編寫GameUtil.java的代碼：

package cn.bjsxt.test;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.net.URL;

import javax.imageio.ImageIO;

public class GameUtil {

private GameUtil() {

}

public static Image getImage(String path) {

URL u = GameUtil.class.getClassLoader().getResource(path);

BufferedImage image = null;

try {

image = ImageIO.read(u);

} catch (IOException e) {

e.printStackTrace();

}

return image;

}

}

4.運行之后的結果：

總結

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