空当接龙java源代码,空当接龙程序名

求一个JAVA游戏代码！！！急！！！

俄罗斯方块——java源代码提供

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import java.awt.*;

import java.awt.event.*;

//俄罗斯方块类

public class ERS_Block extends Frame{

public static boolean isPlay=false;

public static int level=1,score=0;

public static TextField scoreField,levelField;

public static MyTimer timer;

GameCanvas gameScr;

public static void main(String[] argus){

ERS_Block ers = new ERS_Block("俄罗斯方块游戏 V1.0 Author:Vincent");

WindowListener win_listener = new WinListener();

ers.addWindowListener(win_listener);

}

//俄罗斯方块类的构造方法

ERS_Block(String title){

super(title);

setSize(600,480);

setLayout(new GridLayout(1,2));

gameScr = new GameCanvas();

gameScr.addKeyListener(gameScr);

timer = new MyTimer(gameScr);

timer.setDaemon(true);

timer.start();

timer.suspend();

add(gameScr);

Panel rightScr = new Panel();

rightScr.setLayout(new GridLayout(2,1,0,30));

rightScr.setSize(120,500);

add(rightScr);

//右边信息窗体的布局

MyPanel infoScr = new MyPanel();

infoScr.setLayout(new GridLayout(4,1,0,5));

infoScr.setSize(120,300);

rightScr.add(infoScr);

//定义标签和初始值

Label scorep = new Label("分数:",Label.LEFT);

Label levelp = new Label("级数:",Label.LEFT);

scoreField = new TextField(8);

levelField = new TextField(8);

scoreField.setEditable(false);

levelField.setEditable(false);

infoScr.add(scorep);

infoScr.add(scoreField);

infoScr.add(levelp);

infoScr.add(levelField);

scorep.setSize(new Dimension(20,60));

scoreField.setSize(new Dimension(20,60));

levelp.setSize(new Dimension(20,60));

levelField.setSize(new Dimension(20,60));

scoreField.setText("0");

levelField.setText("1");

//右边控制按钮窗体的布局

MyPanel controlScr = new MyPanel();

controlScr.setLayout(new GridLayout(5,1,0,5));

rightScr.add(controlScr);

//定义按钮play

Button play_b = new Button("开始游戏");

play_b.setSize(new Dimension(50,200));

play_b.addActionListener(new Command(Command.button_play,gameScr));

//定义按钮Level UP

Button level_up_b = new Button("提高级数");

level_up_b.setSize(new Dimension(50,200));

level_up_b.addActionListener(new Command(Command.button_levelup,gameScr));

//定义按钮Level Down

Button level_down_b =new Button("降低级数");

level_down_b.setSize(new Dimension(50,200));

level_down_b.addActionListener(new Command(Command.button_leveldown,gameScr));

//定义按钮Level Pause

Button pause_b =new Button("游戏暂停");

pause_b.setSize(new Dimension(50,200));

pause_b.addActionListener(new Command(Command.button_pause,gameScr));

//定义按钮Quit

Button quit_b = new Button("退出游戏");

quit_b.setSize(new Dimension(50,200));

quit_b.addActionListener(new Command(Command.button_quit,gameScr));

controlScr.add(play_b);

controlScr.add(level_up_b);

controlScr.add(level_down_b);

controlScr.add(pause_b);

controlScr.add(quit_b);

setVisible(true);

gameScr.requestFocus();

}

}

//重写MyPanel类，使Panel的四周留空间

class MyPanel extends Panel{

public Insets getInsets(){

return new Insets(30,50,30,50);

}

}

//游戏画布类

class GameCanvas extends Canvas implements KeyListener{

final int unitSize = 30; //小方块边长

int rowNum; //正方格的行数

int columnNum; //正方格的列数

int maxAllowRowNum; //允许有多少行未削

int blockInitRow; //新出现块的起始行坐标

int blockInitCol; //新出现块的起始列坐标

int [][] scrArr; //屏幕数组

Block b; //对方快的引用

//画布类的构造方法

GameCanvas(){

rowNum = 15;

columnNum = 10;

maxAllowRowNum = rowNum - 2;

b = new Block(this);

blockInitRow = rowNum - 1;

blockInitCol = columnNum/2 - 2;

scrArr = new int [32][32];

}

//初始化屏幕，并将屏幕数组清零的方法

void initScr(){

for(int i=0;irowNum;i++)

for (int j=0; jcolumnNum;j++)

scrArr[j]=0;

b.reset();

repaint();

}

//重新刷新画布方法

public void paint(Graphics g){

for(int i = 0; i rowNum; i++)

for(int j = 0; j columnNum; j++)

drawUnit(i,j,scrArr[j]);

}

//画方块的方法

public void drawUnit(int row,int col,int type){

scrArr[row][col] = type;

Graphics g = getGraphics();

tch(type){ //表示画方快的方法

case 0: g.setColor(Color.black);break; //以背景为颜色画

case 1: g.setColor(Color.blue);break; //画正在下落的方块

case 2: g.setColor(Color.magenta);break; //画已经落下的方法

}

g.fill3DRect(col*unitSize,getSize().height-(row+1)*unitSize,unitSize,unitSize,true);

g.dispose();

}

public Block getBlock(){

return b; //返回block实例的引用

}

//返回屏幕数组中(row,col)位置的属性值

public int getScrArrXY(int row,int col){

if (row 0 || row = rowNum || col 0 || col = columnNum)

return(-1);

else

return(scrArr[row][col]);

}

//返回新块的初始行坐标方法

public int getInitRow(){

return(blockInitRow); //返回新块的初始行坐标

}

//返回新块的初始列坐标方法

public int getInitCol(){

return(blockInitCol); //返回新块的初始列坐标

}

//满行删除方法

void deleteFullLine(){

int full_line_num = 0;

int k = 0;

for (int i=0;irowNum;i++){

boolean isfull = true;

L1:for(int j=0;jcolumnNum;j++)

if(scrArr[j] == 0){

k++;

isfull = false;

break L1;

}

if(isfull) full_line_num++;

if(k!=0 k-1!=i !isfull)

for(int j = 0; j columnNum; j++){

if (scrArr[j] == 0)

drawUnit(k-1,j,0);

else

drawUnit(k-1,j,2);

scrArr[k-1][j] = scrArr[j];

}

}

for(int i = k-1 ;i rowNum; i++){

for(int j = 0; j columnNum; j++){

drawUnit(i,j,0);

scrArr[j]=0;

}

}

ERS_Block.score += full_line_num;

ERS_Block.scoreField.setText(""+ERS_Block.score);

}

//判断游戏是否结束方法

boolean isGameEnd(){

for (int col = 0 ; col columnNum; col ++){

if(scrArr[maxAllowRowNum][col] !=0)

return true;

}

return false;

}

public void keyTyped(KeyEvent e){

}

public void keyReleased(KeyEvent e){

}

//处理键盘输入的方法

public void keyPressed(KeyEvent e){

if(!ERS_Block.isPlay)

return;

tch(e.getKeyCode()){

case KeyEvent.VK_DOWN:b.fallDown();break;

case KeyEvent.VK_LEFT:b.leftMove();break;

case KeyEvent.VK_RIGHT:b.rightMove();break;

case KeyEvent.VK_SPACE:b.leftTurn();break;

}

}

}

//处理控制类

class Command implements ActionListener{

static final int button_play = 1; //给按钮分配编号

static final int button_levelup = 2;

static final int button_leveldown = 3;

static final int button_quit = 4;

static final int button_pause = 5;

static boolean pause_resume = true;

int curButton; //当前按钮

GameCanvas scr;

//控制按钮类的构造方法

Command(int button,GameCanvas scr){

curButton = button;

this.scr=scr;

}

//按钮执行方法

public void actionPerformed (ActionEvent e){

tch(curButton){

case button_play:if(!ERS_Block.isPlay){

scr.initScr();

ERS_Block.isPlay = true;

ERS_Block.score = 0;

ERS_Block.scoreField.setText("0");

ERS_Block.timer.resume();

}

scr.requestFocus();

break;

case button_levelup:if(ERS_Block.level 10){

ERS_Block.level++;

ERS_Block.levelField.setText(""+ERS_Block.level);

ERS_Block.score = 0;

ERS_Block.scoreField.setText(""+ERS_Block.score);

}

scr.requestFocus();

break;

case button_leveldown:if(ERS_Block.level 1){

ERS_Block.level--;

ERS_Block.levelField.setText(""+ERS_Block.level);

ERS_Block.score = 0;

ERS_Block.scoreField.setText(""+ERS_Block.score);

}

scr.requestFocus();

break;

case button_pause:if(pause_resume){

ERS_Block.timer.suspend();

pause_resume = false;

}else{

ERS_Block.timer.resume();

pause_resume = true;

}

scr.requestFocus();

break;

case button_quit:System.exit(0);

}

}

}

//方块类

class Block {

static int[][] pattern = {

{0x0f00,0x4444,0x0f00,0x4444},//用十六进至表示，本行表示长条四种状态

{0x04e0,0x0464,0x00e4,0x04c4},

{0x4620,0x6c00,0x4620,0x6c00},

{0x2640,0xc600,0x2640,0xc600},

{0x6220,0x1700,0x2230,0x0740},

{0x6440,0x0e20,0x44c0,0x8e00},

{0x0660,0x0660,0x0660,0x0660}

};

int blockType; //块的模式号（0-6）

int turnState; //块的翻转状态（0-3）

int blockState; //快的下落状态

int row,col; //块在画布上的坐标

GameCanvas scr;

//块类的构造方法

Block(GameCanvas scr){

this.scr = scr;

blockType = (int)(Math.random() * 1000)%7;

turnState = (int)(Math.random() * 1000)%4;

blockState = 1;

row = scr.getInitRow();

col = scr.getInitCol();

}

//重新初始化块，并显示新块

public void reset(){

blockType = (int)(Math.random() * 1000)%7;

turnState = (int)(Math.random() * 1000)%4;

blockState = 1;

row = scr.getInitRow();

col = scr.getInitCol();

dispBlock(1);

}

//实现“块”翻转的方法

public void leftTurn(){

if(assertValid(blockType,(turnState + 1)%4,row,col)){

dispBlock(0);

turnState = (turnState + 1)%4;

dispBlock(1);

}

}

//实现“块”的左移的方法

public void leftMove(){

if(assertValid(blockType,turnState,row,col-1)){

dispBlock(0);

col--;

dispBlock(1);

}

}

//实现块的右移

public void rightMove(){

if(assertValid(blockType,turnState,row,col+1)){

dispBlock(0);

col++;

dispBlock(1);

}

}

//实现块落下的操作的方法

public boolean fallDown(){

if(blockState == 2)

return(false);

if(assertValid(blockType,turnState,row-1,col)){

dispBlock(0);

row--;

dispBlock(1);

return(true);

}else{

blockState = 2;

dispBlock(2);

return(false);

}

}

//判断是否正确的方法

boolean assertValid(int t,int s,int row,int col){

int k = 0x8000;

for(int i = 0; i 4; i++){

for(int j = 0; j 4; j++){

if((int)(pattern[t][s]k) != 0){

int temp = scr.getScrArrXY(row-i,col+j);

if (temp0||temp==2)

return false;

}

k = k 1;

}

}

return true;

}

//同步显示的方法

public synchronized void dispBlock(int s){

int k = 0x8000;

for (int i = 0; i 4; i++){

for(int j = 0; j 4; j++){

if(((int)pattern[blockType][turnState]k) != 0){

scr.drawUnit(row-i,col+j,s);

}

k=k1;

}

}

}

}

//定时线程

class MyTimer extends Thread{

GameCanvas scr;

public MyTimer(GameCanvas scr){

this.scr = scr;

}

public void run(){

while(true){

try{

sleep((10-ERS_Block.level + 1)*100);

}

catch(InterruptedException e){}

if(!scr.getBlock().fallDown()){

scr.deleteFullLine();

if(scr.isGameEnd()){

ERS_Block.isPlay = false;

suspend();

}else

scr.getBlock().reset();

}

}

}

class WinListener extends WindowAdapter{

public void windowClosing (WindowEvent l){

System.exit(0);

}

}

求java小游戏源代码

表1. CheckerDrag.java

// CheckerDrag.javaimport java.awt.*;import java.awt.event.*;public class CheckerDrag extends java.applet.Applet{ // Dimension of checkerboard square. // 棋盘上每个小方格的尺寸 final static int SQUAREDIM = 40; // Dimension of checkerboard -- includes black outline. // 棋盘的尺寸 – 包括黑色的轮廓线 final static int BOARDDIM = 8 * SQUAREDIM + 2; // Dimension of checker -- 3/4 the dimension of a square. // 棋子的尺寸 – 方格尺寸的3/4 final static int CHECKERDIM = 3 * SQUAREDIM / 4; // Square colors are dark green or white. // 方格的颜色为深绿色或者白色 final static Color darkGreen = new Color (0, 128, 0); // Dragging flag -- set to true when user presses mouse button over checker // and cleared to false when user releases mouse button. // 拖动标记 --当用户在棋子上按下鼠标按键时设为true， // 释放鼠标按键时设为false boolean inDrag = false; // Left coordinate of checkerboard's upper-left corner. // 棋盘左上角的左方向坐标 int boardx; // Top coordinate of checkerboard's upper-left corner. //棋盘左上角的上方向坐标 int boardy; // Left coordinate of checker rectangle origin (upper-left corner). // 棋子矩形原点(左上角)的左方向坐标 int ox; // Top coordinate of checker rectangle origin (upper-left corner). // 棋子矩形原点(左上角)的上方向坐标 int oy; // Left displacement between mouse coordinates at time of press and checker // rectangle origin. // 在按键时的鼠标坐标与棋子矩形原点之间的左方向位移 int relx; // Top displacement between mouse coordinates at time of press and checker // rectangle origin. // 在按键时的鼠标坐标与棋子矩形原点之间的上方向位移 int rely; // Width of applet drawing area. // applet绘图区域的宽度 int width; // Height of applet drawing area. // applet绘图区域的高度 int height; // Image buffer. // 图像缓冲 Image imBuffer; // Graphics context associated with image buffer. // 图像缓冲相关联的图形背景 Graphics imG; public void init () { // Obtain the size of the applet's drawing area. // 获取applet绘图区域的尺寸 width = getSize ().width; height = getSize ().height; // Create image buffer. // 创建图像缓冲 imBuffer = createImage (width, height); // Retrieve graphics context associated with image buffer. // 取出图像缓冲相关联的图形背景 imG = imBuffer.getGraphics (); // Initialize checkerboard's origin, so that board is centered. // 初始化棋盘的原点，使棋盘在屏幕上居中 boardx = (width - BOARDDIM) / 2 + 1; boardy = (height - BOARDDIM) / 2 + 1; // Initialize checker's rectangle's starting origin so that checker is // centered in the square located in the top row and second column from // the left. // 初始化棋子矩形的起始原点，使得棋子在第一行左数第二列的方格里居中 ox = boardx + SQUAREDIM + (SQUAREDIM - CHECKERDIM) / 2 + 1; oy = boardy + (SQUAREDIM - CHECKERDIM) / 2 + 1; // Attach a mouse listener to the applet. That listener listens for // mouse-button press and mouse-button release events. // 向applet添加一个用来监听鼠标按键的按下和释放事件的鼠标监听器 addMouseListener (new MouseAdapter () { public void mousePressed (MouseEvent e) { // Obtain mouse coordinates at time of press. // 获取按键时的鼠标坐标 int x = e.getX (); int y = e.getY (); // If mouse is over draggable checker at time // of press (i.e., contains (x, y) returns // true), save distance between current mouse // coordinates and draggable checker origin // (which will always be positive) and set drag // flag to true (to indicate drag in progress). // 在按键时如果鼠标位于可拖动的棋子上方 // （也就是contains (x, y)返回true），则保存当前 // 鼠标坐标与棋子的原点之间的距离（始终为正值）并且 // 将拖动标志设为true（用来表明正处在拖动过程中） if (contains (x, y)) { relx = x - ox; rely = y - oy; inDrag = true; } } boolean contains (int x, int y) { // Calculate center of draggable checker. // 计算棋子的中心位置 int cox = ox + CHECKERDIM / 2; int coy = oy + CHECKERDIM / 2; // Return true if (x, y) locates with bounds // of draggable checker. CHECKERDIM / 2 is the // radius. // 如果(x, y)仍处于棋子范围内则返回true // CHECKERDIM / 2为半径 return (cox - x) * (cox - x) + (coy - y) * (coy - y) CHECKERDIM / 2 * CHECKERDIM / 2; } public void mouseReleased (MouseEvent e) { // When mouse is released, clear inDrag (to // indicate no drag in progress) if inDrag is // already set. // 当鼠标按键被释放时，如果inDrag已经为true， // 则将其置为false（用来表明不在拖动过程中） if (inDrag) inDrag = false; } }); // Attach a mouse motion listener to the applet. That listener listens // for mouse drag events. //向applet添加一个用来监听鼠标拖动事件的鼠标运动监听器 addMouseMotionListener (new MouseMotionAdapter () { public void mouseDragged (MouseEvent e) { if (inDrag) { // Calculate draggable checker's new // origin (the upper-left corner of // the checker rectangle). // 计算棋子新的原点（棋子矩形的左上角） int tmpox = e.getX () - relx; int tmpoy = e.getY () - rely; // If the checker is not being moved // (at least partly) off board, // assign the previously calculated // origin (tmpox, tmpoy) as the // permanent origin (ox, oy), and // redraw the display area (with the // draggable checker at the new // coordinates). // 如果棋子（至少是棋子的一部分）没有被 // 移出棋盘，则将之前计算的原点 // (tmpox, tmpoy)赋值给永久性的原点(ox, oy)， // 并且刷新显示区域（此时的棋子已经位于新坐标上） if (tmpox boardx tmpoy boardy tmpox + CHECKERDIM boardx + BOARDDIM tmpoy + CHECKERDIM boardy + BOARDDIM) { ox = tmpox; oy = tmpoy; repaint (); } } } }); } public void paint (Graphics g) { // Paint the checkerboard over which the checker will be dragged. // 在棋子将要被拖动的位置上绘制棋盘 paintCheckerBoard (imG, boardx, boardy); // Paint the checker that will be dragged. // 绘制即将被拖动的棋子 paintChecker (imG, ox, oy); // Draw contents of image buffer. // 绘制图像缓冲的内容 g.drawImage (imBuffer, 0, 0, this); } void paintChecker (Graphics g, int x, int y) { // Set checker shadow color. // 设置棋子阴影的颜色 g.setColor (Color.black); // Paint checker shadow. // 绘制棋子的阴影 g.fillOval (x, y, CHECKERDIM, CHECKERDIM); // Set checker color. // 设置棋子颜色 g.setColor (Color.red); // Paint checker. // 绘制棋子 g.fillOval (x, y, CHECKERDIM - CHECKERDIM / 13, CHECKERDIM - CHECKERDIM / 13); } void paintCheckerBoard (Graphics g, int x, int y) { // Paint checkerboard outline. // 绘制棋盘轮廓线 g.setColor (Color.black); g.drawRect (x, y, 8 * SQUAREDIM + 1, 8 * SQUAREDIM + 1); // Paint checkerboard. // 绘制棋盘 for (int row = 0; row 8; row++) { g.setColor (((row 1) != 0) ? darkGreen : Color.white); for (int col = 0; col 8; col++) { g.fillRect (x + 1 + col * SQUAREDIM, y + 1 + row * SQUAREDIM, SQUAREDIM, SQUAREDIM); g.setColor ((g.getColor () == darkGreen) ? Color.white : darkGreen); } } } // The AWT invokes the update() method in response to the repaint() method // calls that are made as a checker is dragged. The default implementation // of this method, which is inherited from the Container class, clears the // applet's drawing area to the background color prior to calling paint(). // This clearing followed by drawing causes flicker. CheckerDrag overrides // update() to prevent the background from being cleared, which eliminates // the flicker. // AWT调用了update()方法来响应拖动棋子时所调用的repaint()方法。该方法从 // Container类继承的默认实现会在调用paint()之前，将applet的绘图区域清除 // 为背景色，这种绘制之后的清除就导致了闪烁。CheckerDrag重写了update()来 // 防止背景被清除，从而消除了闪烁。 public void update (Graphics g) { paint (g); }}

跪求JAVA编写的小游戏源代码

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

import java.awt.image.*;

import java.awt.geom.*;

import java.util.*;

class Car{

Image img;

int x, y;

Dimension dim;

Car(Image img){

this.img=img;

}

Car(Image img, int x, int y){

this.img=img; this.x=x; this.y=y;

}

Car(Image img, int x, int y, Dimension dim){

this(img, x, y);

this.dim=dim;

}

void draw(Graphics g, ImageObserver observer){

g.drawImage(img, x, y, observer);

}

int getX(){ return x;}

int getY(){ return y;}

void setX(int x){this.x=x;}

void setY(int y){this.y=y;}

void setLocation(int x, int y){

this.x=x; this.y=y;

}

int getWidth(){ return img.getWidth(null);}

int getHeight(){ return img.getHeight(null);}

Rectangle2D getRectangle(){

return new Rectangle2D.Float(x, y, getWidth(), getHeight());

}

void move(int dx, int dy){

x+=dx;

y+=dy;

if(dim!=null){

if(x0)x=0;

if(x+getWidth()dim.getWidth())

x=(int)dim.getWidth()-getWidth();

}

}

boolean intersects(Car car){

return getRectangle().intersects(car.getRectangle());

}

boolean intersects(int x, int y){

return getRectangle().intersects(x, y, getWidth(), getHeight());

}

}

public class CarRace extends Applet implements KeyListener, Runnable{

Image buff;

Canvas screen;

Graphics2D gs, gb;

Car redCar;

Car[] enemy=new Car[20];

Button bStart;

Thread game;

boolean loop=true;

Dimension dim=new Dimension(200, 300);

int road;

Random rnd=new Random();

public void init(){

prepareResource();

setBackground(Color.blue);

initScreen();

add(screen);

bStart=new Button("霸烙 矫累");

add(bStart);

bStart.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent ae){

screen.requestFocus();

if(!game.isAlive())

game.start();

}

});

}

void prepareResource(){

Image imgRed=getImage(getCodeBase(),"images/red_car.gif");

Image imgBlue=getImage(getCodeBase(),"images/blue_car.gif");

Image imgGreen=getImage(getCodeBase(),"images/green_car.gif");

MediaTracker mt=new MediaTracker(this);

try{

mt.addImage(imgRed, 0);

mt.addImage(imgBlue, 1);

mt.addImage(imgGreen, 2);

mt.waitForAll();

}catch(Exception e){}

buff=createImage((int)dim.getWidth(), (int)dim.getHeight());

gb=(Graphics2D)buff.getGraphics();

redCar=new Car(imgRed, 80,250, dim);

for(int i=0;i10;i++){

enemy[i]=new Car(imgBlue, 0, 0);

}

for(int i=10;ienemy.length;i++){

enemy[i]=new Car(imgGreen, 0, 0);

}

for(int i=0;ienemy.length;i++){

setEnemy(i);

}

game=new Thread(this);

}

public void stop(){

loop=false;

}

public void run(){

while(loop){

drawScreen();

try{ Thread.sleep(50);}catch(Exception e){}

}

}

void initScreen(){

screen=new Canvas(){

public void paint(Graphics g){

if(gs==null){

gs=(Graphics2D)screen.getGraphics();

}

drawScreen();

}

};

screen.setSize(dim);

screen.addKeyListener(this);

}

void setEnemy(int en){

int x, y;

next:while(true){

x=rnd.nextInt((int)dim.getWidth()-enemy[en].getWidth());

y=-rnd.nextInt(5000)-200;

for(int j=0;jenemy.length;j++){

if(j!=en enemy[j].intersects(x, y))continue next;

}

enemy[en].setLocation(x, y);

break;

}

}

void check(Car en){

if(redCar.intersects(en)){

if(redCar.getX()en.getX()){

en.move(-20, 0);

redCar.move(20, 0);

}

else{

en.move(20,0);

redCar.move(-20, 0);

}

}

}

synchronized void drawScreen(){

gb.clearRect(0, 0, (int)dim.getWidth(), (int)dim.getHeight());

gb.setPaint(new Color(100, 100, 100));

gb.fillRect(0, 0, (int)dim.getWidth(), (int)dim.getHeight());

drawRoad();

for(int i=0;ienemy.length;i++){

enemy[i].move(0, 15);

enemy[i].draw(gb, screen);

if(enemy[i].getY()dim.getHeight())

setEnemy(i);

check(enemy[i]);

}

redCar.draw(gb, screen);

gs.drawImage(buff, 0,0, screen);

}

void drawRoad(){

road+=80;

gb.setPaint(Color.yellow);

gb.fillRect((int)dim.getWidth()/2, road,10,150);

if(road=dim.getHeight())road=-150;

}

public void keyPressed(KeyEvent ke){

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

redCar.move(-10,0);

}

else if(ke.getKeyCode()==KeyEvent.VK_RIGHT){

redCar.move(10,0);

}

}

public void keyReleased(KeyEvent ke){}

public void keyTyped(KeyEvent ke){}

}

这个是一个典型的Applet,文件名应该是CarRace.java,需要图片作为车子等等,本人也是别人给的,但是还要个.html文件来运行它,代码为:

Applet code="CarRace.class" width=250 height=350

/Applet

请楼主采纳

有Java编写一个输出“Hello world!”的Applet 程序和嵌入该Applet的HYML页面

(1) 编辑Applet 的java源文件 创建文件夹C:\ghq，在该文件夹下建立 HelloWorld.java 文件的源代码如下： import java.awt.*; import java.applet.*; public class HelloWorld extends Applet //继承Applet类，这是Applet Java程序的特点 { public void paint(Graphics g ) { g.drawString("Hello World!",5,35)； } } 保存上述程序在C:\ghq\HelloWorld.java文件里。 (2)编译Applet 编译HelloWorld.java源文件可使用如下JDK命令： C:\ghq\javac HelloWorld.javaEnter 注意：如果编写的源程序违反了Java编程语言的语法规则，Java编译器将在屏幕上显示语法错误提示信息。源文件中必须不含任何语法错误，Java编译器才能成功地把源程序转换为appletviewer和浏览器能够执行的字节码程序。 成功地编译Java applet之后生成响应的字节码文件HelloWorld.class的文件。用资源管理器或DIR命令列出目录列表，将会发现目录C:\ghq中多了一个名为HelloWorld.class的文件。 (3)创建HTML文件 在运行创建的HelloWorld.class 之前，还需创建一个HTML文件，appletviewer或浏览器将通过该文件访问创建的Applet。为运行HelloWorld.class, 需要创建包含如下HTML语句的名为HelloWorld.html的文件。 HTML TITLEHelloWorld! Applet/TITLE APPLET CODE="HelloWorld.class" //这里应该是HelloWorld.class WIDTH=200 HEIGHT=100 /APPLET /HTML 本例中，APPLET语句指明该Applet字节码类文件名和以像素为单位的窗口的尺寸。虽然这里HTML文件使用的文件名为HelloWorld.HTML，它对应于HelloWorld.java的名字，但这种对应关系不是必须的，可以用其他的任何名字(比如说Ghq.HTML)命名该HTML文件。但是使文件名保持一种对应关系可给文件的管理带来方便。 (4)执行 HelloWorld.html 如果用appletviewer运行HelloWorld.html,需输入如下的命令行： C:\ghq\appletviewer HelloWorld.htmlENTER 可以看出，该命令启动了appletviewer并指明了HTML文件，该HTML文件中包含对应于HelloWorld 的APPLET语句。 如果用浏览器运行HelloWorld Applet，需在浏览器的地址栏中输入HTML文件URL地址。