java小程序简单源代码 小程序源代码怎么用

java小程序源代码，简单点的，100多行，谁有啊？？

// My car shop.java

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import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.border.*;

public class carshop extends JFrame

{

// JPanel to hold all pictures

private JPanel windowJPanel;

private String[] cars = { "","阿斯顿马丁", "美洲虎", "凯迪拉克",

"罗孚", "劳斯莱斯","别克"};

private int[] jiage = { 0,150000, 260000, 230000,

140000, 290000, 150000};

// JLabels for first snack shown

private JLabel oneJLabel;

private JLabel oneIconJLabel;

// JLabels for second snack shown

private JLabel twoJLabel;

private JLabel twoIconJLabel;

// JLabels for third snack shown

private JLabel threeJLabel;

private JLabel threeIconJLabel;

// JLabels for fourth snack shown

private JLabel fourJLabel;

private JLabel fourIconJLabel;

// JLabels for fifth snack shown

private JLabel fiveJLabel;

private JLabel fiveIconJLabel;

// JLabels for sixth snack shown

private JLabel sixJLabel;

private JLabel sixIconJLabel;

// JTextField for displaying snack price

private JTextArea displayJTextArea;

// JLabel and JTextField for user input

private JLabel inputJLabel;

private JComboBox selectCountryJComboBox;

private JLabel inputJLabel2;

private JTextField inputJTextField2;

// JButton to enter user input

private JButton enterJButton;

//JButton to clear the components

private JButton clearJButton;

// no-argument constructor

public carshop()

{

createUserInterface();

}

// create and position GUI components; register event handlers

private void createUserInterface()

{

// get content pane for attaching GUI components

Container contentPane = getContentPane();

// enable explicit positioning of GUI components

contentPane.setLayout( null );

// set up windowJPanel

windowJPanel = new JPanel();

windowJPanel.setBounds( 10, 20, 340, 200 );

windowJPanel.setBorder( new LineBorder( Color.BLACK ) );

windowJPanel.setLayout( null );

contentPane.add( windowJPanel );

// set up oneIconJLabel

oneIconJLabel = new JLabel();

oneIconJLabel.setBounds( 10, 20, 100, 65 );

oneIconJLabel.setIcon( new ImageIcon( "images/阿斯顿马丁.jpg" ) );

windowJPanel.add( oneIconJLabel );

// set up oneJLabel

oneJLabel = new JLabel();

oneJLabel.setBounds( 10, 60, 100, 70 );

oneJLabel.setText( "阿斯顿马丁" );

oneJLabel.setHorizontalAlignment( JLabel.CENTER );

windowJPanel.add( oneJLabel );

// set up twoIconJLabel

twoIconJLabel = new JLabel();

twoIconJLabel.setBounds( 120, 20, 100, 65 );

twoIconJLabel.setIcon( new ImageIcon( "images/美洲虎.jpg" ) );

windowJPanel.add( twoIconJLabel );

// set up twoJLabel

twoJLabel = new JLabel();

twoJLabel.setBounds( 110, 60, 100, 70 );

twoJLabel.setText( "美洲虎" );

twoJLabel.setHorizontalAlignment( JLabel.CENTER );

windowJPanel.add( twoJLabel );

// set up threeIconJLabel

threeIconJLabel = new JLabel();

threeIconJLabel.setBounds( 230, 20, 100, 65 );

threeIconJLabel.setIcon( new ImageIcon(

"images/凯迪拉克.jpg" ) );

windowJPanel.add( threeIconJLabel );

// set up threeJLabel

threeJLabel = new JLabel();

threeJLabel.setBounds( 230, 60, 100, 70);

threeJLabel.setText( "凯迪拉克" );

threeJLabel.setHorizontalAlignment( JLabel.CENTER );

windowJPanel.add( threeJLabel );

// set up fourIconJLabel

fourIconJLabel = new JLabel();

fourIconJLabel.setBounds( 10, 100, 100, 65 );

fourIconJLabel.setIcon( new ImageIcon( "images/罗孚.jpg" ) );

windowJPanel.add( fourIconJLabel );

// set up fourJLabel

fourJLabel = new JLabel();

fourJLabel.setBounds( 10, 150, 50, 70 );

fourJLabel.setText( "罗孚" );

fourJLabel.setHorizontalAlignment( JLabel.CENTER );

windowJPanel.add( fourJLabel );

// set up fiveIconJLabel

fiveIconJLabel = new JLabel();

fiveIconJLabel.setBounds( 120, 100, 100, 65 );

fiveIconJLabel.setIcon( new ImageIcon(

"images/劳斯莱斯.jpg" ) );

windowJPanel.add( fiveIconJLabel );

// set up fiveJLabel

fiveJLabel = new JLabel();

fiveJLabel.setBounds( 110, 150, 100, 70 );

fiveJLabel.setText( "劳斯莱斯" );

fiveJLabel.setHorizontalAlignment( JLabel.CENTER );

windowJPanel.add( fiveJLabel );

// set up sixIconJLabel

sixIconJLabel = new JLabel();

sixIconJLabel.setBounds( 230, 100, 100, 65 );

sixIconJLabel.setIcon( new ImageIcon( "images/别克.jpg" ) );

windowJPanel.add( sixIconJLabel );

// set up sixJLabel

sixJLabel = new JLabel();

sixJLabel.setBounds( 230, 150, 100, 70 );

sixJLabel.setText( "别克" );

sixJLabel.setHorizontalAlignment( JLabel.CENTER );

windowJPanel.add( sixJLabel );

// set up enterJButton

enterJButton = new JButton();

enterJButton.setBounds( 390, 160, 135, 30 );

enterJButton.setText( "Enter" );

contentPane.add( enterJButton );

enterJButton.addActionListener(

new ActionListener() // anonymous inner class

{

// event handler called when enterJButton is clicked

public void actionPerformed( ActionEvent event )

{

enterJButtonActionPerformed( event );

}

} // end anonymous inner class

); // end call to addActionListener

// set up clearJButton

clearJButton = new JButton();

clearJButton.setBounds( 390, 200, 135, 30 );

clearJButton.setText( "Clear" );

contentPane.add( clearJButton );

// set up inputJLabel

inputJLabel = new JLabel();

inputJLabel.setBounds( 390, 25, 135, 25 );

inputJLabel.setText( "Please make selection:" );

contentPane.add( inputJLabel );

selectCountryJComboBox = new JComboBox( cars );

selectCountryJComboBox.setBounds( 390, 50, 135, 21 );

selectCountryJComboBox.setMaximumRowCount( 3 );

contentPane.add( selectCountryJComboBox );

// set up inputJTextField

inputJLabel2 = new JLabel();

inputJLabel2.setBounds( 390, 80, 150, 20 );

inputJLabel2.setText( "Input the Numble:" );

contentPane.add( inputJLabel2 );

// set up inputJTextField

inputJTextField2 = new JTextField();

inputJTextField2.setBounds( 390, 100, 135, 25 );

inputJTextField2.setHorizontalAlignment( JTextField.RIGHT );

contentPane.add( inputJTextField2 );

clearJButton.addActionListener(

new ActionListener() // anonymous inner class

{

// event handler called when clearJButton is clicked

public void actionPerformed( ActionEvent event )

{

clearJButtonActionPerformed( event );

}

} // end anonymous inner class

);

// set up displayJTextField

displayJTextArea = new JTextArea();

displayJTextArea.setBounds( 10, 237,515, 70 );

displayJTextArea.setEditable( false );

contentPane.add( displayJTextArea );

// set properties of application's window

setTitle( "My car Shop" ); // set title bar string

setSize( 550, 360 ); // set window size

setVisible( true ); // display window

} // end method createUserInterface

private void clearJButtonActionPerformed( ActionEvent event )

{

// clear the JTextFields

inputJTextField2.setText( "" );

displayJTextArea.setText("");

} // end method clearJButtonActionPerformed

private void enterJButtonActionPerformed( ActionEvent event )

{

double z;

double c;

int x;

int y;

x=selectCountryJComboBox.getSelectedIndex();

y=Integer.parseInt(inputJTextField2.getText());

double discountRate;

int amount = Integer.parseInt( inputJTextField2.getText());

switch (amount/5)

{

case 0:

discountRate = 0;

break;

case 1:

discountRate = 1;

break;

case 2:

discountRate = 2;

break;

case 3:

discountRate = 3;

break;

default:

discountRate = 4;

} // end switch statement

c=1-discountRate/100;

z=jiage[x]*y*c;

displayJTextArea.append("你选择的是："+cars[x]+"；"+

"它的单价是："+jiage[x]+"；" +"你购买该产品的数量是："+y+"，" +"\n"+"该数量的折扣是："

+discountRate + " %"+"；"+"本次消费的总价格是："+z+"元"+"!"+"\n");

}

public static void main( String args[] )

{

carshop application = new carshop();

application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

} // end method main

} // end class carshop

求编写一个超级简单的Java的程序源代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class ConstructFrame extends JFrame

{

private static final long serialVersionUID = 1L;

String value1="",result,value2="";

int flag=0,fix=0,sum=1;

Boolean happy;

JTextField text=new JTextField(30);

int flagsum=0;

Container c=getContentPane();

JButton buttonx;

ConstructFrame()

{ super("计算器");

c.setLayout(null);

c.setBackground(Color.blue);

this.setSize(400, 400);

c.add(text);

text.setHorizontalAlignment(JTextField.RIGHT);

final JButton buttonx=new JButton("BackSpace");

c.add(buttonx);

buttonx.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

int count=0;

String temp;

if(flag==0)

{

count=value1.length();

if(count!=1)

temp=value1.substring(0, count-1);

else

temp="0";

value1=temp;

}

else

{

count=value2.length();

if(count!=1)

temp=value2.substring(0, count-1);

else

temp="0";

value2=temp;

}

text.setText(temp);

}

});

final JButton buttony=new JButton("CE");

c.add(buttony);

buttony.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

value1="";

value2="";

flag=0;

text.setText("0");

}

});

final JButton button1=new JButton("1");

c.add(button1);

button1.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+1;

temp=value1;

}

else

{

value2=value2+1;

temp=value2;

}

text.setText(temp);

}

});

final JButton button2=new JButton(" 2 ");

c.add(button2);

button2.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+2;

temp=value1;

}

else

{

value2=value2+2;

temp=value2;

}

text.setText(temp);

}

});

final JButton button3=new JButton("3");

c.add(button3);

button3.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+3;

temp=value1;

}

else

{

value2=value2+3;

temp=value2;

}

text.setText(temp);

}

});

final JButton button4=new JButton("4");

c.add(button4);

button4.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+4;

temp=value1;

}

else

{

value2=value2+4;

temp=value2;

}

text.setText(temp);

}

});

final JButton button5=new JButton("5");

c.add(button5);

button5.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+5;

temp=value1;

}

else

{

value2=value2+5;

temp=value2;

}

text.setText(temp);

}

});

final JButton button6=new JButton("6");

c.add(button6);

button6.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+6;

temp=value1;

}

else

{

value2=value2+6;

temp=value2;

}

text.setText(temp);

}

});

final JButton button7=new JButton("7");

c.add(button7);

button7.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+7;

temp=value1;

}

else

{

value2=value2+7;

temp=value2;

}

text.setText(temp);

}

});

final JButton button8=new JButton("8");

c.add(button8);

button8.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+8;

temp=value1;

}

else

{

value2=value2+8;

temp=value2;

}

text.setText(temp);

}

});

final JButton button9=new JButton("9");

c.add(button9);

button9.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+9;

temp=value1;

}

else

{

value2=value2+9;

temp=value2;

}

text.setText(temp);

}

});

final JButton button0=new JButton("0");

c.add(button0);

button0.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+0;

temp=value1;

}

else

{

value2=value2+0;

temp=value2;

}

text.setText(temp);

}

});

final JButton buttonadd=new JButton(" + ");

c.add(buttonadd);

buttonadd.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=1;

flagsum=0;

}

});

final JButton buttonsubtract=new JButton(" - ");

c.add(buttonsubtract);

buttonsubtract.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=2;

flagsum=0;

}

});

final JButton buttoncheng=new JButton(" * ");

c.add(buttoncheng);

buttoncheng.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=3;

flagsum=0;

}

});

final JButton buttonchu=new JButton(" / ");

c.add(buttonchu);

buttonchu.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

flagsum=0;

fix=4;

}

});

final JButton buttonequal=new JButton(" = ");

c.add(buttonequal);

buttonequal.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

double temp1,temp2;

double temp=0;

flagsum=0;

temp1=Double.parseDouble(value1);

temp2=Double.parseDouble(value2);

flag=0;

switch(fix)

{

case 1: temp=temp1+temp2;break;

case 2: temp=temp1-temp2;break;

case 3: temp=temp1*temp2;break;

case 4: temp=temp1/temp2;break;

}

result=Double.valueOf(temp).toString();

value1=result;

value2="";

flag=1;

text.setText(result);

}

});

final JButton buttonpoint=new JButton(".");

c.add(buttonpoint);

buttonpoint.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{ if(flagsum==0)

{

String temp;

if(flag==0 )

{

value1=value1+".";

temp=value1;

}

else

{

value2=value2+".";

temp=value2;

}

flagsum=1;

text.setText(temp);

}

}

});

JButton buttonz=new JButton("Start");

c.add(buttonz);

buttonz.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{ if(sum%2==1)

{

happy=true;

text.setText("0.");

flag=0;

}

else

{

happy=false;

value1="";

value2="";

text.setText("");

}

text.setEnabled(happy);

button1.setEnabled(happy);

button2.setEnabled(happy);

button3.setEnabled(happy);

button4.setEnabled(happy);

button5.setEnabled(happy);

button6.setEnabled(happy);

button7.setEnabled(happy);

button8.setEnabled(happy);

button9.setEnabled(happy);

button0.setEnabled(happy);

buttonx.setEnabled(happy);

buttony.setEnabled(happy);

buttonadd.setEnabled(happy);

buttonsubtract.setEnabled(happy);

buttonpoint.setEnabled(happy);

buttonequal.setEnabled(happy);

buttoncheng.setEnabled(happy);

buttonchu.setEnabled(happy);

sum++;

}

});

button1.setEnabled(false);

button2.setEnabled(false);

button3.setEnabled(false);

button4.setEnabled(false);

button5.setEnabled(false);

button6.setEnabled(false);

button7.setEnabled(false);

button8.setEnabled(false);

button9.setEnabled(false);

button0.setEnabled(false);

buttonx.setEnabled(false);

buttony.setEnabled(false);

buttonadd.setEnabled(false);

buttonsubtract.setEnabled(false);

buttonpoint.setEnabled(false);

buttonequal.setEnabled(false);

buttoncheng.setEnabled(false);

buttonchu.setEnabled(false);

text.setEnabled(false);

text.setBounds(20, 20, 200, 40);

buttonx.setBounds(20, 60,100, 40);

buttony.setBounds(140, 60,100, 40);

buttonz.setBounds(260, 60,80, 40);

button1.setBounds(20, 120,60, 40);

button2.setBounds(100, 120,60, 40);

button3.setBounds(180, 120,60, 40);

buttonadd.setBounds(260, 120,60, 40);

button4.setBounds(20, 180,60, 40);

button5.setBounds(100, 180,60, 40);

button6.setBounds(180, 180,60, 40);

buttonsubtract.setBounds(260, 180,60, 40);

button7.setBounds(20, 240,60, 40);

button8.setBounds(100, 240,60, 40);

button9.setBounds(180, 240,60, 40);

buttoncheng.setBounds(260,240,60,40);

button0.setBounds(20, 300,60, 40);

buttonpoint.setBounds(100, 300, 60, 40);

buttonequal.setBounds(180,300,60, 40);

buttonchu.setBounds(260, 300,60, 40);

setVisible(true);

}

class MYMouseEvent extends MouseAdapter

{

public void mousePressed(MouseEvent e)

{

value1=e.toString();

text.setText(value1);

}

}

}

class Calutator

{

public static void main(String[] args)

{

new ConstructFrame();

}

}

你自己慢慢的看吧！

谁能给个JAVA的小程序代码，越小越好！

这是我晓得的最简单的java小程序代码了你可以看看:

package com.kenki.emp;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

import java.util.*;

import java.sql.SQLException;

import java.sql.*;

public class emp extends HttpServlet {

private static final String CONTENT_TYPE = "text/html; charset=GBK";

//Initialize global variables

public void init() throws ServletException {

}

//Process the HTTP Get request

public void doGet(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

response.setContentType(CONTENT_TYPE);

PrintWriter out = response.getWriter();

String code = request.getParameter("code");

String name = request.getParameter("name");

String pay = request.getParameter("pay");

System.out.println("empcode:" + code);

System.out.println("name:" + name);

System.out.println("pay:" + pay);

//创建驱动

new com.microsoft.jdbc.sqlserver.SQLServerDriver();

String strd =

"jdbc:microsoft:sqlserver://localhost:1433;databasename=emp_dates";

String username = "sa";

String pws = "";

try {

java.sql.Connection conn = java.sql.DriverManager.getConnection(

strd, username, pws);

String strs = "insert into emp values(?,?,?)";

java.sql.PreparedStatement pre = conn.prepareStatement(strs);

pre.setString(1, code);

pre.setString(2, name);

pre.setString(3, pay);

pre.execute();

pre.close();

conn.close();

//重定向至查询页面

out.println("成功保存！！");

response.sendRedirect("emp.html");

} catch (SQLException ss) {

ss.printStackTrace();

response.sendRedirect("/WebModule1/error.html");

}

}

//Process the HTTP Post request

public void doPost(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

doGet(request, response);

}

//Clean up resources

public void destroy() {

}

}