完整程式碼！！！

import java.awt.*;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import javax.swing.ImageIcon;

import javax.swing.JPanel;

public class Mhh {

public static void main(String args[]){

Frame w=new Frame();

w.setSize(430,500);

MyPanel9 mp=new MyPanel9();

w.add(mp);

w.addKeyListener(mp);

mp.addKeyListener(mp);

Thread t=new Thread(mp);

t.start();

w.show();

}

}

class MyPanel9 extends JPanel implements Runnable,KeyListener { int count=1000;//發射子彈的數目

int flag1=0;//標誌flag為1時發射子彈

int m=0; //記錄已發射子彈的數目

int max=2000;//記錄得分

int x=280;//下面飛機的座標

int y=420;

int x1[]=new int[15];//上面飛機的座標

int[] y1=new int[15];

int x2[]=new int[count];//發射子彈的座標

int[] y2=new int[count];

public MyPanel9(){//上面飛機隨即分佈

for(int i=0;i<15;i++){

x1[i]=(int)(Math.random()*400);

y1[i]=(int)(Math.random()*500);

}

}

public void paint(Graphics g){

super.paint(g); Image img2=new ImageIcon("1.jpg").getImage(); g.drawImage(img2,0,0,430,500,null); Image img1=new ImageIcon("2.jpg").getImage();//畫下面的飛機 g.drawImage(img1,x,y,30,40,null); if(max>0){ Font f=new Font("",Font.BOLD,16); g.setFont(f); g.setColor(Color.RED); g.drawString("成績是："+max,20,20); for(int i=0;i<10;i++){ Image img3=new ImageIcon("4.jpg").getImage();//畫上面的飛機 g.drawImage(img3,x1[i],y1[i],30,40,null); } if(m==count) m=0; if(flag1==1){//畫新子彈的位置 x2[m]=x; y2[m]=y; m++; flag1=0; } for(int i=0;i<m;i++){ g.setColor(Color.RED); g.fillOval(x2[i]+5,y2[i],15,15); } } else{ Font ff=new Font("",Font.BOLD,36); g.setFont(ff); g.setColor(Color.RED); g.drawString("GAME OVER",100,200); } } public void run(){ while(true){ for(int i=0;i<10;i++){//飛機隨機下落 y1[i]++; if(y1[i]>500){ y1[i]=0; x1[i]=(int)(Math.random()*400); max-=50; }

}

for(int j=0;j<m;j++){//子彈移動的過程

y2[j]-=10;

}

for(int i=0;i<m;i++){ //子彈擊中飛機的過程

if(y2[i]>0){

for(int j=0;j<10;j++){

if(0<=(y2[i]-y1[j])&&(y2[i]-y1[j])<=10){

if(-15<=(x2[i]-x1[j])&&(x2[i]-x1[j])<=10){

max+=10;

y2[i]=-1;

x1[j]=(int)(Math.random()*400); y1[j]=0;

}

}

}

}

}

if(max<0){

return;

}

try{

Thread.sleep(35);

}catch(Exception e){}

repaint();

}

}

public void keyTyped(KeyEvent e) {

// TODO Auto-generated method stub

}

public void keyPressed(KeyEvent e) {//控制下面飛機移動

if(e.getKeyCode()==KeyEvent.VK_LEFT){

x-=10;

if(x<0){

x=0;

}

}

if(e.getKeyCode()==KeyEvent.VK_UP){

y-=10;

if(y<0){

y=0;

}

}

if(e.getKeyCode()==KeyEvent.VK_RIGHT){ x+=10;

if(x>400){

x=400;

}

}

if(e.getKeyCode()==KeyEvent.VK_DOWN){ y+=10;

if(y>420){

y=420;

}

}

repaint();

if(e.getKeyCode()==KeyEvent.VK_SPACE){ flag1=1;

}

}

public void keyReleased(KeyEvent e) { // TODO Auto-generated method stub

}

}