有趣的JAVA代码片段,搞笑的代码片段

求一个简单又有趣的JAVA小游戏代码

具体如下：

连连看的小源码

package Lianliankan;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class lianliankan implements ActionListener

{

JFrame mainFrame; //主面板

Container thisContainer;

JPanel centerPanel,southPanel,northPanel; //子面板

JButton diamondsButton[][] = new JButton[6][5];//游戏按钮数组

JButton exitButton,resetButton,newlyButton; //退出，重列，重新开始按钮

JLabel fractionLable=new JLabel("0"); //分数标签

JButton firstButton,secondButton; //

分别记录两次62616964757a686964616fe59b9ee7ad9431333335326239被选中的按钮

int grid[][] = new int[8][7];//储存游戏按钮位置

static boolean pressInformation=false; //判断是否有按钮被选中

int x0=0,y0=0,x=0,y=0,fristMsg=0,secondMsg=0,validateLV; //游戏按钮的位置坐标

int i,j,k,n;//消除方法控制

代码（code）是程序员用开发工具所支持的语言写出来的源文件，是一组由字符、符号或信号码元以离散形式表示信息的明确的规则体系。

对于字符和Unicode数据的位模式的定义，此模式代表特定字母、数字或符号（例如 0x20 代表一个空格，而 0x74 代表字符“t”）。一些数据类型每个字符使用一个字节；每个字节可以具有 256 个不同的位模式中的一个模式。

在计算机中，字符由不同的位模式（ON 或 OFF）表示。每个字节有 8 位，这 8 位可以有 256 种不同的 ON 和 OFF 组合模式。对于使用 1 个字节存储每个字符的程序，通过给每个位模式指派字符可表示最多 256 个不同的字符。2 个字节有 16 位，这 16 位可以有 65,536 种唯一的 ON 和 OFF 组合模式。使用 2 个字节表示每个字符的程序可表示最多 65,536 个字符。

单字节代码页是字符定义，这些字符映射到每个字节可能有的 256 种位模式中的每一种。代码页定义大小写字符、数字、符号以及 !、@、#、% 等特殊字符的位模式。每种欧洲语言（如德语和西班牙语）都有各自的单字节代码页。

虽然用于表示 A 到 Z 拉丁字母表字符的位模式在所有的代码页中都相同，但用于表示重音字符（如"é"和"á"）的位模式在不同的代码页中却不同。如果在运行不同代码页的计算机间交换数据，必须将所有字符数据由发送计算机的代码页转换为接收计算机的代码页。如果源数据中的扩展字符在接收计算机的代码页中未定义，那么数据将丢失。

如果某个数据库为来自许多不同国家的客户端提供服务，则很难为该数据库选择这样一种代码页，使其包括所有客户端计算机所需的全部扩展字符。而且，在代码页间不停地转换需要花费大量的处理时间。

相关问答

Q1: 需求50句以上的JAVA代码，并带注解

Java文件操作大全

1.创建文件夹

//import java.io.*;

File myFolderPath = new File(%%1);

try {

if (!myFolderPath.exists()) {

myFolderPath.mkdir();

}

}

catch (Exception e) {

System.out.println("新建目录操作出错");

e.printStackTrace();

}

2.创建文件

//import java.io.*;

File myFilePath = new File(%%1);

try {

if (!myFilePath.exists()) {

myFilePath.createNewFile();

}

FileWriter resultFile = new FileWriter(myFilePath);

PrintWriter myFile = new PrintWriter(resultFile);

myFile.println(%%2);

resultFile.close();

}

catch (Exception e) {

System.out.println("新建文件操作出错");

e.printStackTrace();

}

3.删除文件

//import java.io.*;

File myDelFile = new File(%%1);

try {

myDelFile.delete();

}

catch (Exception e) {

System.out.println("删除文件操作出错");

e.printStackTrace();

}

4.删除文件夹

//import java.io.*;

File delFolderPath = new File(%%1);

try {

delFolderPath.delete(); //删除空文件夹

}

catch (Exception e) {

System.out.println("删除文件夹操作出错");

e.printStackTrace();

}

5.删除一个文件下夹所有的文件夹

//import java.io.*;

File delfile=new File(%%1);

File[] files=delfile.listFiles();

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

if(files[i].isDirectory()){

files[i].delete();

}

}

6.清空文件夹

//import java.io.*;

File delfilefolder=new File(%%1);

try {

if (!delfilefolder.exists()) {

delfilefolder.delete();

}

delfilefolder.mkdir();

}

catch (Exception e) {

System.out.println("清空目录操作出错");

e.printStackTrace();

}

7.读取文件

//import java.io.*;

// 逐行读取数据

FileReader fr = new FileReader(%%1);

BufferedReader br = new BufferedReader(fr);

String %%2 = br.readLine();

while (%%2 != null) {

%%3

%%2 = br.readLine();

}

br.close();

fr.close();

8.写入文件

//import java.io.*;

// 将数据写入文件

try {

FileWriter fw = new FileWriter(%%1);

fw.write(%%2);

fw.flush();

fw.close();

} catch (IOException e) {

e.printStackTrace();

}

9.写入随机文件

//import java.io.*;

try {

RandomAcessFile logFile=new RandomAcessFile(%%1,"rw");

long lg=logFile.length();

logFile.seek(%%2);

logFile.writeByte(%%3);

}catch(IOException ioe){

System.out.println("无法写入文件："+ioe.getMessage());

}

10.读取文件属性

//import java.io.*;

// 文件属性的取得

File af = new File(%%1);

if (af.exists()) {

System.out.println(f.getName() + "的属性如下： 文件长度为：" + f.length());

System.out.println(f.isFile() ? "是文件" : "不是文件");

System.out.println(f.isDirectory() ? "是目录" : "不是目录");

System.out.println(f.canRead() ? "可读取" : "不");

System.out.println(f.canWrite() ? "是隐藏文件" : "");

System.out.println("文件夹的最后修改日期为：" + new Date(f.lastModified()));

} else {

System.out.println(f.getName() + "的属性如下：");

System.out.println(f.isFile() ? "是文件" : "不是文件");

System.out.println(f.isDirectory() ? "是目录" : "不是目录");

System.out.println(f.canRead() ? "可读取" : "不");

System.out.println(f.canWrite() ? "是隐藏文件" : "");

System.out.println("文件的最后修改日期为：" + new Date(f.lastModified()));

}

if(f.canRead()){

%%2

}

if(f.canWrite()){

%%3

}

11.写入属性

//import java.io.*;

File filereadonly=new File(%%1);

try {

boolean b=filereadonly.setReadOnly();

}

catch (Exception e) {

System.out.println("拒绝写访问："+e.printStackTrace());

}

12.枚举一个文件夹中的所有文件

//import java.io.*;

//import java.util.*;

LinkedListString folderList = new LinkedListString();

folderList.add(%%1);

while (folderList.size() 0) {

File file = new File(folderList.peek());

folderList.removeLast();

File[] files = file.listFiles();

ArrayListFile fileList = new ArrayListFile();

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

if (files[i].isDirectory()) {

folderList.add(files[i].getPath());

} else {

fileList.add(files[i]);

}

}

for (File f : fileList) {

%%2=f.getAbsoluteFile();

%%3

}

}

13.复制文件夹

//import java.io.*;

//import java.util.*;

LinkedListString folderList = new LinkedListString();

folderList.add(%%1);

LinkedListString folderList2 = new LinkedListString();

folderList2.add(%%2+ %%1.substring(%%1.lastIndexOf("\\")));

while (folderList.size() 0) {

(new File(folderList2.peek())).mkdirs(); // 如果文件夹不存在 则建立新文件夹

File folders = new File(folderList.peek());

String[] file = folders.list();

File temp = null;

try {

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

if (folderList.peek().endsWith(File.separator)) {

temp = new File(folderList.peek() + File.separator

+ file[i]);

} else {

temp = new File(folderList.peek() + File.separator

+ file[i]);

}

if (temp.isFile()) {

FileInputStream input = new FileInputStream(temp);

FileOutputStream output = new FileOutputStream(

folderList2.peek() + File.separator

+ (temp.getName()).toString());

byte[] b = new byte[5120];

int len;

while ((len = input.read(b)) != -1) {

output.write(b, 0, len);

}

output.flush();

output.close();

input.close();

}

if (temp.isDirectory()) {// 如果是子文件夹

for (File f : temp.listFiles()) {

if (f.isDirectory()) {

folderList.add(f.getPath());

folderList2.add(folderList2.peek()

+ File.separator + f.getName());

}

}

}

}

} catch (Exception e) {

//System.out.println("复制整个文件夹内容操作出错");

e.printStackTrace();

}

folderList.removeFirst();

folderList2.removeFirst();

}

14.复制一个文件夹下所有的文件夹到另一个文件夹下

//import java.io.*;

//import java.util.*;

File copyfolders=new File(%%1);

File[] copyfoldersList=copyfolders.listFiles();

for(int k=0;kcopyfoldersList.length;k++){

if(copyfoldersList[k].isDirectory()){

ArrayListStringfolderList=new ArrayListString();

folderList.add(copyfoldersList[k].getPath());

ArrayListStringfolderList2=new ArrayListString();

folderList2.add(%%2+"/"+copyfoldersList[k].getName());

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

(new File(folderList2.get(j))).mkdirs(); //如果文件夹不存在 则建立新文件夹

File folders=new File(folderList.get(j));

String[] file=folders.list();

File temp=null;

try {

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

if(folderList.get(j).endsWith(File.separator)){

temp=new File(folderList.get(j)+"/"+file[i]);

}

else{

temp=new File(folderList.get(j)+"/"+File.separator+file[i]);

}

FileInputStream input = new FileInputStream(temp);

if(temp.isFile()){

FileInputStream input = new FileInputStream(temp);

FileOutputStream output = new FileOutputStream(folderList2.get(j) + "/" +

(temp.getName()).toString());

byte[] b = new byte[5120];

int len;

while ( (len = input.read(b)) != -1) {

output.write(b, 0, len);

}

output.flush();

output.close();

input.close();

}

if(temp.isDirectory()){//如果是子文件夹

folderList.add(folderList.get(j)+"/"+file[i]);

folderList2.add(folderList2.get(j)+"/"+file[i]);

}

}

}

catch (Exception e) {

System.out.println("复制整个文件夹内容操作出错");

e.printStackTrace();

}

}

}

}

15.移动文件夹

//import java.io.*;

//import java.util.*;

LinkedListString folderList = new LinkedListString();

folderList.add(%%1);

LinkedListString folderList2 = new LinkedListString();

folderList2.add(%%2 + %%1.substring(%%1.lastIndexOf("\\")));

while (folderList.size() 0) {

(new File(folderList2.peek())).mkdirs(); // 如果文件夹不存在 则建立新文件夹

File folders = new File(folderList.peek());

String[] file = folders.list();

File temp = null;

try {

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

if (folderList.peek().endsWith(File.separator)) {

temp = new File(folderList.peek() + File.separator

+ file[i]);

} else {

temp = new File(folderList.peek() + File.separator

+ file[i]);

}

if (temp.isFile()) {

FileInputStream input = new FileInputStream(temp);

FileOutputStream output = new FileOutputStream(

folderList2.peek() + File.separator

+ (temp.getName()).toString());

byte[] b = new byte[5120];

int len;

while ((len = input.read(b)) != -1) {

output.write(b, 0, len);

}

output.flush();

output.close();

input.close();

if (!temp.delete())

System.out.println("删除单个文件操作出错!");

}

if (temp.isDirectory()) {// 如果是子文件夹

for (File f : temp.listFiles()) {

if (f.isDirectory()) {

folderList.add(f.getPath());

folderList2.add(folderList2.peek()

+ File.separator + f.getName());

}

}

}

}

} catch (Exception e) {

// System.out.println("复制整个文件夹内容操作出错");

e.printStackTrace();

}

folderList.removeFirst();

folderList2.removeFirst();

}

File f = new File(%%1);

if (!f.delete()) {

for (File file : f.listFiles()) {

if (file.list().length == 0) {

System.out.println(file.getPath());

file.delete();

}

}

}

16.移动一个文件夹下所有的文件夹到另一个目录下

//import java.io.*;

//import java.util.*;

File movefolders=new File(%%1);

File[] movefoldersList=movefolders.listFiles();

for(int k=0;kmovefoldersList.length;k++){

if(movefoldersList[k].isDirectory()){

ArrayListStringfolderList=new ArrayListString();

folderList.add(movefoldersList[k].getPath());

ArrayListStringfolderList2=new ArrayListString();

folderList2.add(%%2+"/"+movefoldersList[k].getName());

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

(new File(folderList2.get(j))).mkdirs(); //如果文件夹不存在 则建立新文件夹

File folders=new File(folderList.get(j));

String[] file=folders.list();

File temp=null;

try {

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

if(folderList.get(j).endsWith(File.separator)){

temp=new File(folderList.get(j)+"/"+file[i]);

}

else{

temp=new File(folderList.get(j)+"/"+File.separator+file[i]);

}

FileInputStream input = new FileInputStream(temp);

if(temp.isFile()){

FileInputStream input = new FileInputStream(temp);

FileOutputStream output = new FileOutputStream(folderList2.get(j) + "/" +

(temp.getName()).toString());

byte[] b = new byte[5120];

int len;

while ( (len = input.read(b)) != -1) {

output.write(b, 0, len);

}

output.flush();

output.close();

input.close();

temp.delete();

}

if(temp.isDirectory()){//如果是子文件夹

folderList.add(folderList.get(j)+"/"+file[i]);

folderList2.add(folderList2.get(j)+"/"+file[i]);

}

}

}

catch (Exception e) {

System.out.println("复制整个文件夹内容操作出错");

e.printStackTrace();

}

}

movefoldersList[k].delete();

}

}

17.以一个文件夹的框架在另一个目录创建文件夹和空文件

//import java.io.*;

//import java.util.*;

boolean b=false;//不创建空文件

ArrayListStringfolderList=new ArrayListString();

folderList.add(%%1);

ArrayListStringfolderList2=new ArrayListString();

folderList2.add(%%2);

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

(new File(folderList2.get(j))).mkdirs(); //如果文件夹不存在 则建立新文件夹

File folders=new File(folderList.get(j));

String[] file=folders.list();

File temp=null;

try {

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

if(folderList.get(j).endsWith(File.separator)){

temp=new File(folderList.get(j)+"/"+file[i]);

}

else{

temp=new File(folderList.get(j)+"/"+File.separator+file[i]);

}

FileInputStream input = new FileInputStream(temp);

if(temp.isFile()){

if (b) temp.createNewFile();

}

if(temp.isDirectory()){//如果是子文件夹

folderList.add(folderList.get(j)+"/"+file[i]);

folderList2.add(folderList2.get(j)+"/"+file[i]);

}

}

}

catch (Exception e) {

System.out.println("复制整个文件夹内容操作出错");

e.printStackTrace();

}

}

18.复制文件

//import java.io.*;

int bytesum = 0;

int byteread = 0;

File oldfile = new File(%%1);

try {

if (oldfile.exists()) { //文件存在时

FileInputStream inStream = new FileInputStream(oldfile); //读入原文件

FileOutputStream fs = new FileOutputStream(new File(%%2,oldfile.getName()));

byte[] buffer = new byte[5120];

int length;

while ( (byteread = inStream.read(buffer)) != -1) {

bytesum += byteread; //字节数 文件大小

System.out.println(bytesum);

fs.write(buffer, 0, byteread);

}

inStream.close();

}

}

catch (Exception e) {

System.out.println("复制单个文件操作出错");

e.printStackTrace();

}

19.复制一个文件夹下所有的文件到另一个目录

//import java.io.*;

File copyfiles=new File(%%1);

File[] files=copyfiles.listFiles();

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

if(!files[i].isDirectory()){

int bytesum = 0;

int byteread = 0;

try {

InputStream inStream = new FileInputStream(files[i]); //读入原文件

FileOutputStream fs = new FileOutputStream(new File(%%2,files[i].getName());

byte[] buffer = new byte[5120];

int length;

while ( (byteread = inStream.read(buffer)) != -1) {

bytesum += byteread; //字节数 文件大小

System.out.println(bytesum);

fs.write(buffer, 0, byteread);

}

inStream.close();

} catch (Exception e) {

System.out.println("复制单个文件操作出错");

e.printStackTrace();

}

}

}

20.提取扩展名

String %%2=%%1.substring(%%1.lastIndexOf(".")+1);

Q2: 给段最简单的java代码 让我新手看一下

最简单的java代码肯定就是这个了，如下：

public class MyFirstApp

{

public static void main(String[] args)

{

System.out.print("Hello world");

}

}

“hello world”就是应该是所有学java的新手看的第一个代码了。如果是零基础的新手朋友们可以来我们的java实验班试听，有免费的试听课程帮助学习java必备基础知识，有助教老师为零基础的人提供个人学习方案，学习完成后有考评团进行专业测试，帮助测评学员是否适合继续学习java，15天内免费帮助来报名体验实验班的新手快速入门java，更好的学习java！

Q3: 有没有关于JAVA的一些简单又有趣的程序

import javax.swing.JPanel;

import javax.swing.JFrame;

import javax.swing.JButton;

import java.awt.Point;

import java.awt.Rectangle;

import javax.swing.ImageIcon;

import java.awt.Color;

import javax.swing.JLabel;

import java.awt.Font;

import java.net.URL;

import java.net.URLClassLoader;

import java.util.ArrayList;

import java.util.Date;

public class Game extends JFrame {

/**

* This method initializes jButton1

*

* @return javax.swing.JButton

*/

private JButton getJButton1() {

if (jButton1 == null) {

jButton1 = new JButton();

jButton1.setBounds(new Rectangle(478, 361, 164, 51));

jButton1.setText("重新开始");

jButton1.setVisible(false);

jButton1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

jButton1.setVisible(false);

jLabel.setVisible(false);

try {

Thread.sleep(1000);

} catch (InterruptedException e1) {

// TODO 自动生成 catch 块

e1.printStackTrace();

}

reset();

}

});

}

return jButton1;

}

public static void main(String[] args) {

Game game = new Game();

game.start();

game.reset();

game.gogo();

}

public void reset() {

kup = false;

kdown = false;

kleft = false;

kright = false;

int chushihua = 0;

while (chushihua zidanshu) {

((JButton) buttonal.get(chushihua)).setBounds(new Rectangle(-50,

-50, 10, 10));

chushihua++;

}

gamexunhuan = true;

jButton.setIcon(new ImageIcon(fileLoc));

jButton.setLocation(320, 320);

p = jButton.getLocation();

x=p.getX();

y=p.getY();

firsttime=new Date().getTime();

}

public void start() {

int chushihua = 0;

while (chushihua zidanshu) {

JButton jb = new JButton();

jb.setBounds(new Rectangle(-50, -50, 10, 10));

jb.setEnabled(false);

Threads ths = new Threads(jb);

Thread th = new Thread(ths);

buttonal.add(jb);

threadal.add(th);

chushihua++;

}

Game.Move move = new Move();

Thread tm = new Thread(move);

tm.start();

}

public void gogo() {

int chushihua = 0;

while (chushihua zidanshu) {

((Thread) threadal.get(chushihua)).start();

chushihua++;

try {

Thread.sleep(100);

} catch (InterruptedException e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

}

}

// private static Game game;

private long firsttime;

private long lasttime;

private static final long serialVersionUID = 1L;

private JPanel jPanel = null;

private JButton jButton = null;

private boolean kup ;

private boolean kdown ;

private boolean kleft ;

private boolean kright ;

// 定义玩家的行走步伐，数值越大，移动速度越快 private int step = 3;

Point p; // @jve:decl-index=0:

double x = 0.0;

double y = 0.0;

// 定义了子弹的个数 int zidanshu = 70;

// 定义子弹初始值，这个是不变的

// int chushihua = 0;

// 定义控制子弹行走的循环false就不走了

private boolean gamexunhuan = true;

private JLabel jLabel = null;

private JButton jButton1 = null;

private ArrayList buttonal = new ArrayList();

private ArrayList threadal = new ArrayList();

URLClassLoader urlLoader = (URLClassLoader)this.getClass().getClassLoader();

URL fileLoc = urlLoader.findResource("MyGameIcons/gwl1.gif"); // @jve:decl-index=0:

URL fileLoc1 = urlLoader.findResource("MyGameIcons/gwls1.gif");

/**

* This is the default constructor

*/

public Game() {

super();

initialize();

}

/**

* This method initializes this

*

* @return void

*/

private void initialize() {

this.setSize(700, 700);

this.addWindowListener(new java.awt.event.WindowAdapter() {

public void windowClosing(java.awt.event.WindowEvent e) {

System.exit(1);

}

});

this.setResizable(false);

this.setContentPane(getJPanel());

this.setTitle("范传奇的小游戏！(模拟撑过30秒的小DEMO)");

this.setVisible(true);

}

/**

* This method initializes jPanel

*

* @return javax.swing.JPanel

*/

private JPanel getJPanel() {

if (jPanel == null) {

jLabel = new JLabel();

jLabel.setBounds(new Rectangle(42, -33, 595, 308));

jLabel.setFont(new Font("Dialog", Font.BOLD, 24));

jLabel.setForeground(new Color(250, 2, 2));

jLabel.setEnabled(true);

jLabel.setVisible(false);

jPanel = new JPanel();

jPanel.setLayout(null);

jPanel.add(getJButton(), null);

jPanel.setForeground(new Color(1, 1, 1));

jPanel.setBackground(new Color(1, 1, 1));

jPanel.setVisible(true);

jPanel.add(jLabel, null);

jPanel.add(getJButton1(), null);

}

return jPanel;

}

/**

* This method initializes jButton

*

* @return javax.swing.JButton

*/

class Move implements Runnable {

public void run() {

while(true){

while (gamexunhuan) {

p = jButton.getLocation();

if (kup) {

if (kleft) {

x = p.getX();

y = p.getY();

if (x 0 y 0) {

jButton.setLocation((int) x - step, (int) y

- step);

}

} else if (kright) {

x = p.getX();

y = p.getY();

if (x + 40 700 y 0) {

jButton.setLocation((int) x + step, (int) y

- step);

}

} else {

x = p.getX();

y = p.getY();

if (y 0) {

jButton.setLocation((int) x, (int) y - step);

}

}

}

if (kdown) {

if (kleft) {

x = p.getX();

y = p.getY();

if (y + 60 700 x 0) {

jButton.setLocation((int) x - step, (int) y

+ step);

}

} else if (kright) {

x = p.getX();

y = p.getY();

if (x + 40 700 y + 60 700) {

jButton.setLocation((int) x + step, (int) y

+ step);

}

} else {

x = p.getX();

y = p.getY();

if (y + 60 700) {

jButton.setLocation((int) x, (int) y + step);

}

}

}

if (kleft) {

if (kup) {

x = p.getX();

y = p.getY();

if (x 0 y 0) {

jButton.setLocation((int) x - step, (int) y

- step);

}

} else if (kdown) {

x = p.getX();

y = p.getY();

if (y + 60 700 x 0) {

jButton.setLocation((int) x - step, (int) y

+ step);

}

} else {

x = p.getX();

y = p.getY();

if (x 0) {

jButton.setLocation((int) x - step, (int) y);

}

}

}

if (kright) {

if (kup) {

x = p.getX();

y = p.getY();

if (x + 40 700 y 0) {

jButton.setLocation((int) x + step, (int) y

- step);

}

} else if (kdown) {

x = p.getX();

y = p.getY();

if (x + 40 700 y + 60 700) {

jButton.setLocation((int) x + step, (int) y

+ step);

}

} else {

x = p.getX();

y = p.getY();

if (x + 40 700) {

jButton.setLocation((int) x + step, (int) y);

}

}

}

try {

Thread.sleep(10);

} catch (InterruptedException e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

}

try {

Thread.sleep(50);

} catch (InterruptedException e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

}

}

}

private JButton getJButton() {

if (jButton == null) {

jButton = new JButton();

jButton.setBounds(new Rectangle(320, 320, 30, 30));

jButton.setBackground(new Color(1, 1, 1));

p = jButton.getLocation();

x = p.getX();

y = p.getY();

jButton.setIcon(new ImageIcon(fileLoc));

jButton.addKeyListener(new java.awt.event.KeyAdapter() {

public void keyReleased(java.awt.event.KeyEvent e) {

if(e.getKeyCode()==10){

if(!gamexunhuan){

jButton1.setVisible(false);

jLabel.setVisible(false);

reset();

}

}

if (e.getKeyCode() == 37) {

kleft = false;

}

if (e.getKeyCode() == 38) {

kup = false;

}

if (e.getKeyCode() == 39) {

kright = false;

}

if (e.getKeyCode() == 40) {

kdown = false;

}

}

public void keyPressed(java.awt.event.KeyEvent e) {

if (e.getKeyCode() == 37) {

kleft = true;

}

if (e.getKeyCode() == 38) {

kup = true;

}

// 触发按右键

if (e.getKeyCode() == 39) {

kright = true;

}

if (e.getKeyCode() == 40) {

kdown = true;

}

}

});

}

return jButton;

}

class Threads implements Runnable {

public Threads(JButton jjb) {

jb = jjb;

}

JButton jb = null;

private boolean first = true;

public void run() {

while (gamexunhuan) {

go();

}

}

public void go() {

int zzx = 0;

int zzy = 0;

int zx = 0;

int zy = 0;

while (true) {

if(gamexunhuan){

int fangxiang = (int) (Math.random() * 4 + 1);

// 四个if随即从四个边发射子弹

if (fangxiang == 1) {

zx = 0;

zy = (int) (Math.random() * 701);

}

if (fangxiang == 2) {

zx = (int) (Math.random() * 701);

zy = 0;

}

if (fangxiang == 3) {

zx = 700;

zy = (int) (Math.random() * 701);

}

if (fangxiang == 4) {

zx = (int) (Math.random() * 701);

zy = 700;

}

// 初始化子弹，有了就不在加了

if (first) {

jPanel.add(jb, null);

first = false;

}

jb.setBounds(new Rectangle(zx, zy, 10, 10));

// 定义子弹与物体之间的步长

zzx = (int) (((x + 15) - zx) / 30);

zzy = (int) (((y + 15) - zy) / 30);

}

while (gamexunhuan) {

try {

zx += zzx;

zy += zzy;

jb.setLocation(zx, zy);

if (zx + 5 x zx + 5 x + 30 zy + 5 y

zy + 5 y + 30) {

jButton.setIcon(new ImageIcon(fileLoc1));

gamexunhuan = false;

first = true;

jButton1.setVisible(true);

jLabel.setVisible(true);

lasttime = new Date().getTime();

Date gametime = new Date(lasttime-firsttime);

int min =0;

int sec =0;

min = gametime.getMinutes();

sec = gametime.getSeconds();

String endtime = "";

if(min!=0){

endtime=min + "分 " + sec + "秒";

}else{

endtime=sec + "秒";

}

jLabel.setText(" GAME OVER!!! \n用时：" + endtime);

break;

}

// 超出边线停止循环

if (zx 700 | zy 700 | zx 0 | zy 0) {

break;

}

Thread.sleep(60);

} catch (InterruptedException e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

}

try {

Thread.sleep(50);

} catch (InterruptedException e) {

// TODO 自动生成 catch 块

e.printStackTrace();

}

}

}

}

} // @jve:decl-index=0:visual-constraint="10,10"

这是一个以前写过的“是男人就撑过30秒的小游戏源码”

如果想要执行程序，麻烦留个邮箱。

Q4: 求一段简单的java代码

不知道是否理解对了你的意思，大概写了一下：

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.StringReader;

import java.io.StringWriter;

public class FileReadAndWrite {

private static final int DEFAULT_BUFFER_SIZE = 1024;

public static void main(String[] args) {

File file = new File("E:/workspace/FileIOTest/src/a.txt");

String str = file2String(file, "UTF-8");

str = str.replace('d', 'f');

string2File(str,"E:/workspace/FileIOTest/src/b.txt");

System.out.println("处理完毕");

}

/**

* 文本文件转换为指定编码的字符串

*

* @param file

* 文本文件

* @param encoding

* 编码类型

* @return 转换后的字符串

* @throws IOException

*/

public static String file2String(File file, String encoding) {

InputStreamReader reader = null;

StringWriter writer = new StringWriter();

try {

if (encoding == null || "".equals(encoding.trim())) {

reader = new InputStreamReader(new FileInputStream(file),

encoding);

} else {

reader = new InputStreamReader(new FileInputStream(file));

}

// 将输入流写入输出流

char[] buffer = new char[DEFAULT_BUFFER_SIZE];

int n = 0;

while (-1 != (n = reader.read(buffer))) {

writer.write(buffer, 0, n);

}

} catch (Exception e) {

e.printStackTrace();

return null;

} finally {

if (reader != null)

try {

reader.close();

} catch (IOException e) {

e.printStackTrace();

}

}

// 返回转换结果

if (writer != null)

return writer.toString();

else

return null;

}

/**

* 将字符串写入指定文件(当指定的父路径中文件夹不存在时，会最大限度去创建，以保证保存成功！)

*

* @param res

* 原字符串

* @param filePath

* 文件路径

* @return 成功标记

*/

public static boolean string2File(String res, String filePath) {

boolean flag = true;

BufferedReader bufferedReader = null;

BufferedWriter bufferedWriter = null;

try {

File distFile = new File(filePath);

if (!distFile.getParentFile().exists())

distFile.getParentFile().mkdirs();

bufferedReader = new BufferedReader(new StringReader(res));

bufferedWriter = new BufferedWriter(new FileWriter(distFile));

char buf[] = new char[1024]; // 字符缓冲区

int len;

while ((len = bufferedReader.read(buf)) != -1) {

bufferedWriter.write(buf, 0, len);

}

bufferedWriter.flush();

bufferedReader.close();

bufferedWriter.close();

} catch (IOException e) {

e.printStackTrace();

flag = false;

return flag;

} finally {

if (bufferedReader != null) {

try {

bufferedReader.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

return flag;

}

}

Q5: 一段有意思的java代码请大家解释~

首先0x7FFFFFFF就是Java里面整形变量的最大值了，你可以看看Integer.MAX_VALUE,"0x7FFFFFFF

*

2.0"是，Java会把结果当做double型，因为double型的数值范围比int大，所以得到的是数学上正确的结果，然后强制转换我int就是Integer.MAX_VALUE了，第一个表达式为true；第二个里面"0x7FFFFFFF

*

2"会被认为是int型，因为0x7FFFFFFF和2都是合法的int，所以就是发生数值的溢出(int)(0x7FFFFFFF

*

2)就被算成-2了，你如果把第二个的结果显式制定为double型，得到的结果也是true：

double

d

=

0x7FFFFFFFL

*

2;//加L指定为long型

System.out.println((int)(0x7FFFFFFF

*

2.0)

==

(int)

d);

第三个因为数值比较小，所以是true。