java小程序代码题头 java小程序制作流程

急求大神发几个java 300行代码的小程序 简单点的

/**

* 文件名：Operation.java 2014-1-2 下午3:06:37

* @author Administrator

*/

package cc.icoc.javaxu.action;

import java.util.ArrayList;

import java.util.Scanner;

import cc.icoc.javaxu.datas.StudentInfo;

/**

* @author 许仕永

* 创建时间: 2014 2014-1-2 下午3:06:37

*/

public class Operation

{

int stuNo,stuAge;

String stuName,stuClass,stuSex;

ArrayListStudentInfo list;

/**程序入口

* @param args

*/

public static void main(String[] args)

{

// TODO Auto-generated method stub

new Operation().operation();

}

private int inputInt()

{

Scanner scanner = new Scanner(System.in);

return scanner.nextInt();

}

private String inputStr()

{

Scanner scanner = new Scanner(System.in);

return scanner.nextLine();

}

private void operation()

{

// TODO Auto-generated method stub

if(list == null)

{

list = new ArrayListStudentInfo();

}

while(true)

{

System.out.println("\t\t\t学生信息管理系统\n");

System.out.println("1.信息查阅");

System.out.println("2.信息查询");

System.out.println("3.信息录入");

System.out.println("4.退出系统");

int what = inputInt();

if ( what == 1 )

{

getInfo();

} else if ( what == 2 )

{

allSerach();

} else if ( what == 3 )

{

inputInfo();

} else if( what == 4 )

{

System.out.println("已经退出系统");

System.exit(0);

}

}

}

/**

* 获取全部学生的信息列表

*/

private void getInfo()

{

if(!list.isEmpty())

{

for ( int i = 0; i list.size(); i++ )

{

System.out.println(list.get(i));

}

}

}

/**

* 执行查找

*/

private void allSerach()

{

System.out.println("1.输入学号进行查询");

System.out.println("2.输入姓名进行查询");

int what = inputInt();

if(what == 1)

{

System.out.println("请输入学号：");

search(inputInt());

}

else

{

System.out.println("请输入姓名：");

search(inputStr());

}

}

/**

* 按学生姓名查询学生信息

* @param name 学生姓名

*/

private StudentInfo search(String name)

{

for ( int i = 0; i list.size(); i++ )

{

if(list.get(i).getStuName().equals(name))

{

System.out.println(list.get(i));

return list.get(i);

}

}

System.out.println("未查询到该名字的学生");

return null;

}

/**

* 按学号查询学生信息

* @param id 学号

*/

private StudentInfo search(int id)

{

for ( int i = 0; i list.size(); i++ )

{

if(list.get(i).getStuNo()==id)

{

System.out.println(list.get(i));

return list.get(i);

}

}

System.out.println("未查询到该学号的学生");

return null;

}

/**

* 录入学生信息

*/

private void inputInfo()

{

try

{

System.out.print("请输入学生学号：\n");

stuNo = inputInt();

System.out.print("请输入学生姓名：\n");

stuName = inputStr();

System.out.print("请输入学生性别：\n");

stuSex = inputStr();

System.out.print("请输入学生年龄：\n");

stuAge = inputInt();

System.out.print("请输入学生班级：\n");

stuClass = inputStr();

list.add(new StudentInfo(stuNo, stuAge, stuName, stuSex, stuClass));

} catch (Exception e)

{

// TODO: handle exception

System.out.println("不允许为空，请重新输入");

}

}

}

package cc.icoc.javaxu.action;

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class Stu

{

int countStu = 0;

int sum = 0;

int avg = 0;

ListStuBean list = new ArrayListStu.StuBean();

public static void main(String[] args)

{

new Stu().go();

}

private void go()

{

A:while(true)

{

//构造实体Bean来存储学生成绩

StuBean bean = new StuBean();

System.out.println("请输入成绩：");

System.out.println("语文：");

bean.setYuwen(scanner());

System.out.println("数学：");

bean.setMath(scanner());

//获取英语成绩

System.out.println("英语：");

bean.setEnglish(scanner());

//存入容器

list.add(bean);

for ( int i = 0; i list.size(); i++ )

{

sum += list.get(i).english+list.get(i).math+list.get(i).yuwen;

}

avg = sum / (3*list.size());

System.out.println("当前有"+list.size()+"条学生记录，所有学生总分="+sum+"平均分为"+avg);

//输入y继续录入学生信息，输入x退出

System.out.println("\n已成功录入一个学生的数据，是否继续/退出(y/x)");

if("x".equals(scannerString()))

break A;

}

}

/**输入*/

private int scanner()

{

Scanner scanner = new Scanner(System.in);

return scanner.nextInt();

}

/**输入*/

private String scannerString()

{

Scanner scanner = new Scanner(System.in);

return scanner.nextLine();

}

class StuBean

{

int math;

int yuwen;

int english;

public int getMath()

{

return math;

}

public void setMath(int math)

{

this.math = math;

}

public int getYuwen()

{

return yuwen;

}

public void setYuwen(int yuwen)

{

this.yuwen = yuwen;

}

public int getEnglish()

{

return english;

}

public void setEnglish(int english)

{

this.english = english;

}

}

}

/**

* 文件名：StudentInfo.java 2014-1-2 下午3:07:29

* @author Administrator

*/

package cc.icoc.javaxu.datas;

/**

* @author 许仕永

* 创建时间: 2014 2014-1-2 下午3:07:29

*/

public class StudentInfo

{

int stuNo,stuAge;

String stuName,stuSex,stuClass;

public StudentInfo(int stuNo, int stuAge, String stuName, String stuSex, String stuClass)

{

super();

this.stuNo = stuNo;

this.stuAge = stuAge;

this.stuName = stuName;

this.stuSex = stuSex;

this.stuClass = stuClass;

}

public int getStuNo()

{

return stuNo;

}

public void setStuNo(int stuNo)

{

this.stuNo = stuNo;

}

public int getStuAge()

{

return stuAge;

}

public void setStuAge(int stuAge)

{

this.stuAge = stuAge;

}

public String getStuName()

{

return stuName;

}

public void setStuName(String stuName)

{

this.stuName = stuName;

}

public String getStuSex()

{

return stuSex;

}

public void setStuSex(String stuSex)

{

this.stuSex = stuSex;

}

public String getStuClass()

{

return stuClass;

}

public void setStuClass(String stuClass)

{

this.stuClass = stuClass;

}

@Override

public String toString()

{

// TODO Auto-generated method stub

String s = "学号："+getStuNo()+"\t姓名："+getStuName()+" \t性别："+getStuSex()+"\t年龄："+getStuAge()+"\t班级："+getStuClass();

return s;

}

}

相关问答

Q1: 用JAVA编写一个小应用程序

单人版五子棋，自己写的。

------------------------------------------

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class mypanel extends Panel implements MouseListener

{

int chess[][] = new int[11][11];

boolean Is_Black_True;

mypanel()

{

Is_Black_True = true;

for(int i = 0;i 11;i++)

{

for(int j = 0;j 11;j++)

{

chess[i][j] = 0;

}

}

addMouseListener(this);

setBackground(Color.BLUE);

setBounds(0, 0, 360, 360);

setVisible(true);

}

public void mousePressed(MouseEvent e)

{

int x = e.getX();

int y = e.getY();

if(x 25 || x 330 + 25 ||y 25 || y 330+25)

{

return;

}

if(chess[x/30-1][y/30-1] != 0)

{

return;

}

if(Is_Black_True == true)

{

chess[x/30-1][y/30-1] = 1;

Is_Black_True = false;

repaint();

Justisewiner();

return;

}

if(Is_Black_True == false)

{

chess[x/30-1][y/30-1] = 2;

Is_Black_True = true;

repaint();

Justisewiner();

return;

}

}

void Drawline(Graphics g)

{

for(int i = 30;i = 330;i += 30)

{

for(int j = 30;j = 330; j+= 30)

{

g.setColor(Color.WHITE);

g.drawLine(i, j, i, 330);

}

}

for(int j = 30;j = 330;j += 30)

{

g.setColor(Color.WHITE);

g.drawLine(30, j, 330, j);

}

}

void Drawchess(Graphics g)

{

for(int i = 0;i 11;i++)

{

for(int j = 0;j 11;j++)

{

if(chess[i][j] == 1)

{

g.setColor(Color.BLACK);

g.fillOval((i + 1) * 30 - 8, (j + 1) * 30 - 8, 16, 16);

}

if(chess[i][j] == 2)

{

g.setColor(Color.WHITE);

g.fillOval((i + 1) * 30 - 8, (j + 1) * 30 - 8, 16, 16);

}

}

}

}

void Justisewiner()

{

int black_count = 0;

int white_count = 0;

int i = 0;

for(i = 0;i 11;i++)//横向判断

{

for(int j = 0;j 11;j++)

{

if(chess[i][j] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[i][j] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

for(i = 0;i 11;i++)//竖向判断

{

for(int j = 0;j 11;j++)

{

if(chess[j][i] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[j][i] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

for(i = 0;i 7;i++)//左向右斜判断

{

for(int j = 0;j 7;j++)

{

for(int k = 0;k 5;k++)

{

if(chess[i + k][j + k] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[i + k][j + k] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

}

for(i = 4;i 11;i++)//右向左斜判断

{

for(int j = 6;j = 0;j--)

{

for(int k = 0;k 5;k++)

{

if(chess[i - k][j + k] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[i - k][j + k] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

}

}

void Clear_Chess()

{

for(int i=0;i11;i++)

{

for(int j=0;j11;j++)

{

chess[i][j]=0;

}

}

repaint();

}

public void paint(Graphics g)

{

Drawline(g);

Drawchess(g);

}

public void mouseExited(MouseEvent e){}

public void mouseEntered(MouseEvent e){}

public void mouseReleased(MouseEvent e){}

public void mouseClicked(MouseEvent e){}

}

class myframe extends Frame implements WindowListener

{

mypanel panel;

myframe()

{

setLayout(null);

panel = new mypanel();

add(panel);

panel.setBounds(0,23, 360, 360);

setTitle("单人版五子棋");

setBounds(200, 200, 360, 383);

setVisible(true);

addWindowListener(this);

}

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

public void windowDeactivated(WindowEvent e){}

public void windowActivated(WindowEvent e){}

public void windowOpened(WindowEvent e){}

public void windowClosed(WindowEvent e){}

public void windowIconified(WindowEvent e){}

public void windowDeiconified(WindowEvent e){}

}

public class mywindow

{

public static void main(String argc [])

{

myframe f = new myframe();

}

}

Q2: 编写一个JAVA小程序，从键盘输入3个数，求这三个数的最大值。

可以使用数组,来存储输入的3个数字,然后排序,得到最大值

也可以直接一边输出一边判断,参考代码如下

import java.util.Scanner;

public class Exam {

public static void main(String[] args) {

int len =3;

System.out.println("请输入"+len+"个数字");

Scanner sc = new Scanner(System.in);

int max = sc.nextInt();//假设第一次输入的数字是最大,存在这里

for (int i = 0; i len-1; i++) {

int x = sc.nextInt();

if(xmax){//如果比max还要大.那么就替换掉max的值

max = x;

}

}

System.out.println("最大的数字是"+max);

}

}

测试

请输入3个数字

2

1

6

最大的数字是6

Q3: java一个简单小程序，求高手帮忙编写，万分感谢

class Ball {

public void play() {

System.out.println("玩球儿...");

}

}

class Football extends Ball {

public void play() {

System.out.println("使用足球运动");

}

}

class Basketball extends Ball {

public void play() {

System.out.println("使用篮球运动");

}

}

public class TestMain {

public static void main(String[] args) {

TestMain tm = new TestMain();

tm.testPlay();

}

public void testPlay() {

Ball ball = new Football();

ball.play();

ball = new Basketball();

ball.play();

}

}

/*

D:\javac TestMain.java

D:\java TestMain

使用足球运动

使用篮球运动

*/

Q4: JAVA小游戏程序代码

这个是比较有名的那个烟花，不知道你有没有用：

建个工程，以Fireworks为类即可

import java.awt.*;

import java.applet.*;

import java.awt.event.*;

import javax.swing.*;

public class Fireworks extends Applet implements MouseListener,Runnable

{

int x,y;

int top,point;

/**

*对小程序进行变量和颜色的初始化。

*/

public void init()

{

x = 0;

y = 0;

//设置背景色为黑色

setBackground(Color.black);

addMouseListener(this);

}

public void paint(Graphics g)

{

}

/**

*使该程序可以作为应用程序运行。

*/

public static void main(String args[]) {

Fireworks applet = new Fireworks();

JFrame frame = new JFrame("TextAreaNew");

frame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e){

System.exit(0);

}

});

frame.getContentPane().add(

applet, BorderLayout.CENTER);

frame.setSize(800,400);

applet.init();

applet.start();

frame.setVisible(true);

}

/**

*程序主线程，对一个烟花进行绘制。

*/

public void run()

{

//变量初始化

Graphics g1;

g1 = getGraphics();

int y_move,y_click,x_click;

int v;

x_click = x;

y_click = y;

y_move = 400;

v = 3;

int r,g,b;

while(y_move y_click)

{

g1.setColor(Color.black);

g1.fillOval(x_click,y_move,5,5);

y_move -= 5;

r = (((int)Math.round(Math.random()*4321))%200)+55;

g = (((int)Math.round(Math.random()*4321))%200)+55;

b = (((int)Math.round(Math.random()*4321))%200)+55;

g1.setColor(new Color(r,g,b));

g1.fillOval(x_click,y_move,5,5);

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

{

if(r55) r -= 20;

if(g55) g -= 20;

if(b55) b -=20;

g1.setColor(new Color(r,g,b));

g1.fillOval(x_click,y_move+j*5,5,5);

}

g1.setColor(Color.black);

g1.fillOval(x_click,y_move+5*10,5,5);

try

{

Thread.currentThread().sleep(v++);

} catch (InterruptedException e) {}

}

for(int j=12;j=0;j--)

{

g1.setColor(Color.black);

g1.fillOval(x_click,y_move+(j*5),5,5);

try

{

Thread.currentThread().sleep((v++)/3);

} catch (InterruptedException e) {}

}

y_move = 400;

g1.setColor(Color.black);

while(y_move y_click)

{

g1.fillOval(x_click-2,y_move,9,5);

y_move -= 5;

}

v = 15;

for(int i=0;i=25;i++)

{

r = (((int)Math.round(Math.random()*4321))%200)+55;

g = (((int)Math.round(Math.random()*4321))%200)+55;

b = (((int)Math.round(Math.random()*4321))%200)+55;

g1.setColor(new Color(r,g,b));

g1.drawOval(x_click-3*i,y_click-3*i,6*i,6*i);

if(i23)

{

g1.drawOval(x_click-3*(i+1),y_click-3*(i+1),6*(i+1),6*(i+1));

g1.drawOval(x_click-3*(i+2),y_click-3*(i+2),6*(i+2),6*(i+2));

}

try

{

Thread.currentThread().sleep(v++);

} catch (InterruptedException e) {}

g1.setColor(Color.black);

g1.drawOval(x_click-3*i,y_click-3*i,6*i,6*i);

}

}

/**

*对鼠标事件进行监听。

*临听其鼠标按下事件。

*当按下鼠标时，产生一个新线程。

*/

public void mousePressed(MouseEvent e)

{

x = e.getX();

y = e.getY();

Thread one;

one = new Thread(this);

one.start();

one = null;

}

/**

*实现MouseListener接中的方法。为一个空方法。

*/

public void mouseReleased(MouseEvent e)

{

}

/**

*实现MouseListener接中的方法。为一个空方法。

*/

public void mouseEntered(MouseEvent e)

{

}

/**

*实现MouseListener接中的方法。为一个空方法。

*/

public void mouseExited(MouseEvent e)

{

}

/**

*实现MouseListener接中的方法。为一个空方法。

*/

public void mouseClicked(MouseEvent e)

{

}

}

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