下面有图片，方便大家先看界面！
package 飞机大战;import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.LayoutManager;
import java.awt.RenderingHints.Key;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;import javax.swing.ImageIcon;
import javax.swing.JPanel;
/*** 主类，线程，所有的事物重绘都在这个类* @author yan**/
public class WarUI extends Frame{public static final int WIDTH=410;public static final int HEIGHT=600;public ImageIcon img;public ImageIcon img2;public static WarUI warui;public boolean p=true;public static List<Panle> planes = new ArrayList<Panle>();// 敌人飞机容器public static List<Bullet> bullets = new ArrayList<Bullet>();//子弹容器 public static List<Explode> explodes=new ArrayList<Explode>();//爆炸对象public static int score=0;//计分private Image offScreenImage = null;//用来实现使用双缓冲，画一个缓冲画布public  Panle myplane=new Panle(150,500,warui,60,true);private Random random=new Random();public void lauchFrame() {setTitle("飞机大战");setBounds(380, 100, WIDTH, HEIGHT);// 匿名内部类，短，不涉及将来的扩展addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) {System.exit(0);}});img=new ImageIcon("背景\\back.jpg");//接口，getImage方法返回一个Image对象,repaint方法会调用paint方法img2=new ImageIcon("背景\\back2.jpg");//接口，getImage方法返回一个Image对象,repaint方法会调用paint方法setResizable(false);setVisible(true);MyKeyListener mkl=new MyKeyListener();this.addKeyListener(mkl);new Thread(new PaintThread()).start();}public static void main(String[] args) {warui =new WarUI();warui.lauchFrame();}	/*** 消除闪烁，使用双缓冲* 线程重画更加均匀，更能控制重化的速度。按键重画不能解决子弹自动飞行的问题；* 每次重绘调用repaint方法时，必定会先调用update然后paint方法*/public void update(Graphics g) {if (offScreenImage == null) {offScreenImage = this.createImage(WIDTH, HEIGHT);}// 拿到图片上的画笔Graphics gOffScreen = offScreenImage.getGraphics();Color c = gOffScreen.getColor();gOffScreen.setColor(Color.blue);gOffScreen.fillRect(0, 0, WIDTH,HEIGHT);gOffScreen.setColor(c);paint(gOffScreen);// 画在背后图片上g.drawImage(offScreenImage, 0, 0, null);// 画在屏幕上}/*** 根据线程里面的repaint方法，不断重画面板，飞机，子弹，爆炸效果，等待都是在里面画出来的*/public void paint(Graphics g){//	根据不同的分数层切换背景图片if(score>5000){g.drawImage(img2.getImage(), 0, 0, warui);}else{g.drawImage(img.getImage(), 0, 0, warui);}if(!myplane.isLive()){g.setColor(Color.red);Font f = g.getFont();g.setFont(new Font("宋体",Font.BOLD,60));g.drawString("GAME  OVER!!!", 20, 300);g.setFont(f);g.drawString("复活按B，重新开始按C！！！", 22, 340);p=false;}myplane.draw(g);myplane.move();/*** 添加 / 重绘敌人*/if (planes.size()<3 ) {for (int j = 0; j < 3; j++) {Panle p = new Panle(false, warui);planes.add(p);}}if (planes.size() != 0) {for (int i = 0; i < planes.size(); i++) {Panle diren = planes.get(i);diren.draw(g);diren.dmove();int r1=random.nextInt(200);if(r1==20)diren.dfire();}}g.setColor(Color.BLUE);g.drawString("子 弹 个  数 ："+bullets.size(), 20,50);g.drawString("入侵敌机数："+planes.size(), 20, 70);g.drawString("获得分数："+score, 20, 90);g.drawString("A 开火，P 暂停", 20, 110);g.drawString("C重新开始，B 复活：", 20, 130);g.setColor(Color.BLACK);for(int i=0;i<bullets.size();i++){Bullet b1=bullets.get(i);b1.draw(g);b1.hitplane(planes);b1.hitplane(myplane);b1.move();}/*** 创建爆炸对象*/for (int i = 0; i < explodes.size(); i++) {Explode e = explodes.get(i);e.draw(g);}/*** 血块添加* 添加飞机吃血块的方法*/if(myplane.life<30){Blood b=new Blood();b.draw(g);myplane.eat(b);}}/*** // 内部类，，方便的访问包装类的方法，不方便公开，* @author yan**/private class PaintThread implements Runnable {public void run() {while (true) {	if(p==true){repaint();}try {Thread.sleep(10);} catch (InterruptedException e) {e.printStackTrace();}}}}
/*** 键盘事件，直接添加在面板上，然后对飞机的X,Y速度进行控制* @author yan**/class MyKeyListener extends KeyAdapter {public void keyPressed(KeyEvent e) {switch (e.getKeyCode()) {case 37:	// 左myplane.left();break;case 38:// 上myplane.up();break;case 39:// 右myplane.right();break;case 40:// 下myplane.down();break;case 65://A键if(myplane.isLive()){myplane.fire();}break;case 66://B建复活，清空子弹p=true;myplane=new Panle(150,500,warui,60,true);bullets.removeAll(bullets);break;case 67://C建重新开始p=true;myplane=new Panle(150,500,warui,60,true);bullets.removeAll(bullets);planes.removeAll(planes);break;case 80://P键,暂停if(p==false){p=true;}else{p=false;}break;}}
/*** 抬起键时，把速度为0*/public void keyReleased(KeyEvent e) {if (e.getKeyCode() == 37 || e.getKeyCode() == 39) {myplane.initXc();} else if (e.getKeyCode() == 38 || e.getKeyCode() == 40) {myplane.initYc();}}}}

 这只是一个主类，其他完整代码和图片在压缩包里面，需要的话，请下载！