求java经典小程序代码

代码如下：

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public class HelloWorld {

public static void main(String []args) {

int a = 3, b = 7 ;

 System.out.println("Hello World!");

}

public static int f(int a, int b){

return a*a + a*b + b*b;

}

}

结果如下：

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！

用JAVA编写一个小程序，不限类型好玩点的。

控制台小游戏 class YZDEL

{

public static void main(String[] args)

{

java.util.Random Shiji = new java.util.Random();

java.util.Scanner Shuru = new java.util.Scanner(System.in);

java.util.Scanner Nandu = new java.util.Scanner(System.in);

int YingxHP = 20;

int YingxMP = 0;

int MogHP = 20;

int MogMP = 0;

int MogDo = 0;

int fangyu = 0;

System.out.println("┏━━━━╮┏━━┣┣┓　╮　┓┏━┳━┳┓┓━┓　");

System.out.println("┏┣━━━┓┏━━┣┣┓　┃┏　┃　┃┓┃　╯　");

System.out.println("┣┣━━━┫╭━━┻╯╮　┃╰┓┃　┃╯┏━┣━━┓");

System.out.println("┣┣━━━┫┏━━━━┓╭━━┣━┛┗━┻━┻┛┃┃");

System.out.println("┏┣━━━┓┣━━━━┫　┃┃┃┗╮╮┃┃┣━╯");

System.out.println("　┛┗╯┗━━━━╯┗╯╰╰━━┛┛┗━╯╰━┛");

System.out.println();

System.out.println(" 作者:天狐空幻");

System.out.println();

System.out.println("说明:勇者的操作方式为以下所示:");

System.out.println(" 使用攻击需消耗1MP 伤害1HP");

System.out.println(" 使用蓄力可增加1MP 伤害0HP");

System.out.println(" 使用躲闪需消耗0MP 伤害0HP 躲避攻击");

System.out.println(" 使用重击需消耗3MP 伤害2HP 防御无效");

System.out.println(" 恶龙攻击力高， 注意防御是取胜的关键");

System.out.println(" 恶龙MP达到4时可能会放出火焰无法躲避");

System.out.println(" 准备说明完毕,那么让我们来挑战恶龙吧！");

System.out.println("==================================");

//难度选择

System.out.println("请选择难度");

System.out.println("1.娱乐 2.挑战 3.噩梦");

int ND = Nandu.nextInt();

System.out.println("==================================");

while(true)

{

//HP，MP的显示

System.out.print("勇者: ");

System.out.print(" HP ");

for(int x=YingxHP;x0;x--) System.out.print("*");

System.out.print(" "+YingxHP);

System.out.println();

System.out.print(" ");

System.out.print(" MP ");

for(int x=YingxMP;x0;x--) System.out.print("*");

System.out.print(" "+YingxMP);

System.out.println();

System.out.print("恶龙: ");

System.out.print(" HP ");

for(int y=MogHP;y0;y--) System.out.print("*");

System.out.print(" "+MogHP);

System.out.println();

System.out.print(" ");

System.out.print(" MP ");

for(int y=MogMP;y0;y--) System.out.print("*");

System.out.print(" "+MogMP);

System.out.println();

System.out.println("==================================");

//胜利判定

if(YingxHP1) {System.out.println();System.out.println("勇者HP为0! 不..不可能..我怎么会..勇者倒下了。再接再厉吧！~");System.out.println();break;}

if(MogHP1) {System.out.println();System.out.println("恶龙HP为0! 恶龙绝望的哀鸣中倒了下去。勇者胜利了。恭喜你挑战成功！！");System.out.println();break;}

//角色输入判定

System.out.println("你要做什么：");

System.out.println("1.攻击 2.蓄力");

System.out.println("3.躲闪 4.重击");

System.out.println("____________________");

int Do = Shuru.nextInt();

//敌人输入判定

//娱乐难度

if(ND==1){

for(int i=1;i3;i++) MogDo = Shiji.nextInt(4);}

//挑战难度

if(ND==2){

if(YingxMP==0MogMP==0) {MogDo = 0;}

else if(MogMP==0){for(int i=1;i3;i++) MogDo = Shiji.nextInt(2);}

else if(YingxMP2MogMP2) MogDo = 2;

else if(MogMP4) {for(int i=1;i4;i++) MogDo = Shiji.nextInt(3);}

else MogDo = 3;}

//噩梦难度

if(ND==3){

if(Do==1) MogDo=1;

if(Do==2MogMP0) MogDo=2;

if(Do==2MogMP==0) MogDo=0;

if(Do==3MogMP4) MogDo=0;

if(Do==3MogMP=4) MogDo=3;}//变态判定。。

//战斗分析

//防御

if(Do==3) {fangyu=1;System.out.println("你灵巧的躲避攻击！");}

if(MogDo==1) {fangyu=1;System.out.println("恶龙进行防御！");}

//角色判定

if(Do==1YingxMP==0) {System.out.println("MP不足！");}

if(Do==1YingxMP0) {

if(fangyu==0) {MogHP=MogHP-1;YingxMP=YingxMP-1;System.out.println("你发动攻击！");}

if(fangyu==1) {YingxMP=YingxMP-1;System.out.println("你的攻击被格挡！");}}

if(Do==2) {YingxMP=YingxMP+1;System.out.println("你进行蓄力！");}

if(Do==4YingxMP3) {System.out.println("MP不足！");}

if(Do==4YingxMP2) {MogHP=MogHP-2;YingxMP=YingxMP-3;System.out.println("你发动重击！");}

if(Do 4) System.out.println("你不知所措...");

//敌人判定

if(MogDo==2MogMP==0) {System.out.println("恶龙在发呆！");}

if(MogDo==2MogMP0) {

if(fangyu==0) {YingxHP=YingxHP-2;MogMP=MogMP-1;System.out.println("恶龙发动攻击！");}

if(fangyu==1) {MogMP=MogMP-1;System.out.println("恶龙的攻击被躲开了！");}}

if(MogDo==0) {MogMP=MogMP+1;System.out.println("恶龙进行蓄力！");}

if(MogDo==3MogMP4) {System.out.println("恶龙在发呆！");}

if(MogDo==3MogMP3) {YingxHP=YingxHP-4;MogMP=MogMP-4;System.out.println("恶龙发动火焰吐吸！躲避不能！");}

//结束

fangyu = 0;

MogDo = 0;

System.out.println("____________________");

System.out.println();

System.out.println("=================================="); }

}

}

Java编程（写出程序代码）

写了一个代码，代码如下，可以进行参考

public class sum {

public static void main(String[] args) {

//创建一个Scanner的对象input

Scanner input = new Scanner(System.in); 

//提示用户输入数据 

System.out.print("请输入一个整数");

//将输入的值赋给n

int n = input.nextInt();

//定义变量接收计算后的和

int sum = 0;

//利用循环进行求和

for (int i = 0; i = n; i++) {

sum+=i;

}

//输出最后的和

System.out.println("从0一直到"+n+"的所有整数的和是:"+sum);

}

}

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。

急求大神写个java程序代码，在线等

import java.util.Scanner;public class CORE_C02_011Main { public static void main(String[] args) { System.out.println("请输入第一个整数："); Scanner s1 = new Scanner(System.in); int num1 = s1.nextInt(); System.out.println("请输入第二个整数："); int num2 = s1.nextInt(); if(num1=num2){ System.out.println(num1); System.out.println(num2); }else{ System.out.println(num2); System.out.println(num1); } }}

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