java通讯小程序源代码 java 小程序

求一个java applet小程序的源代码

import java.applet.Applet;

import java.awt.Button;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.TextField;

import java.awt.event.ActionEvent;

public class Nicki extends Applet{

private static final long serialVersionUID = 1L;

private Button ok;

private int num=32;

private int resu=0;

private boolean isRig=false;

private TextField iPut;

public Nicki(){

this.setLayout(null);

ok=new Button("OK");

ok.setActionCommand(getName());

ok.setBounds(150, 150, 40, 20);

iPut=new TextField();

this.add(iPut);

iPut.setBounds(100, 150, 40, 20);

this.add(ok);

ok.addActionListener(new ButtonAction(this));

}

public void paint(Graphics g){

g.setColor(Color.white);

g.fillRect(0, 0, this.getWidth(), this.getHeight());

g.setColor(Color.BLACK);

g.drawString("Please guess a number ", 10, 20);

g.drawString("between 1 and 100", 10, 40);

if(isRig==falseresu!=0){

if(resunum){

g.drawString(""+resu+" is too big !", 10, 100);

}else if(resunum){

g.drawString(resu+"is too small !", 10, 100);

}

}else if(isRig==true){

g.setColor(Color.GREEN);

g.drawString("Yes,"+resu+" is the right number", 10, 80);

g.drawString("Your are great! ", 10, 100);

g.setColor(Color.red);

g.drawString(resu+"!", 70, 120);

}

iPut.setText("");

g.drawString("Input the numberjava通讯小程序源代码：", 0, 150);

}

public void ButtonActionPerformed(ActionEvent e){

if(e.getActionCommand().equals("panel0")){

resu=Integer.parseInt(iPut.getText());

if(num==resu){

isRig=true;

}else{

isRig=false;

}

repaint();

}

}

}

class ButtonAction implements java.awt.event.ActionListener{

Nicki su;

public ButtonAction(Nicki bun){

this.su=bun;

}

public void actionPerformed(ActionEvent e) {

su.ButtonActionPerformed(e);

}

}

相关问答

Q1: 求java经典小程序代码

代码如下：

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：

Q2: java聊天小程序

不知道java通讯小程序源代码你为什么要用这个 流 DataInputStream sin = new DataInputStream(System.in);

java通讯小程序源代码你程序没反应是java通讯小程序源代码你读java通讯小程序源代码的时候一直阻塞着。java通讯小程序源代码你用 BufferedReader试试 肯定有反应。

Q3: 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() {

}

}

Q4: 求JAVA大神给我发一段完整可运行的java图形小程序的代码（不用太多类），谢谢了

/*计算器*/

import java.awt.*;

import javax.swing.*;

import javax.swing.border.*;

import java.awt.event.*;

public class Calculator implements ActionListener{

    JFrame frame;

    JPanel panel;

    JTextField tfShow;/*定义显示文本框*/

    JButton b1[]=new JButton[10]; /*数字按钮*/

    JButton b2[]=new JButton[6]; /*操作按钮*/

    boolean isNumber;/*判断是否输入多位数字的变量*/

    double number;/*存储输入数值、显示结果的变量*/

    double result;/*存储中间运算结果的变量*/

    char operator;/*存储当前操作符的成员变量*/

    public Calculator(){

        frame=new JFrame("计算器");

        frame.setSize(300,300);/*指定框架窗口的大小*/

        frame.setResizable(false);/*使框架窗口不可改变大小*/

        JPanel contentPane=(JPanel)frame.getContentPane();

        contentPane.setBorder(new EmptyBorder(20,20,20,20));/*绘制框架的指定大小的空透明边框*/

        tfShow=new JTextField("0",25);/*指定属性的文本域*/

        tfShow.setHorizontalAlignment(JTextField.RIGHT);/*设置文本域中文本的对齐方式*/

        isNumber=true;/*初始值设置*/

        number=0;/*初始值设置*/

        result=0;/*初始值设置*/

        operator=' ';/*初始值设置*/

        for(int i=0;ib1.length;i++){

            b1[i]=new JButton(Integer.toString(i));/*创建数字按钮*/

            b1[i].setActionCommand(Integer.toString(i));

            b1[i].addActionListener(this);

            b1[i].setForeground(Color.blue);

        }

        String bs[]={"/","*","-","C","+","="};

        for(int i=0;ib2.length;i++){

            b2[i]=new JButton(bs[i]);/*创建操作按钮*/

            b2[i].setActionCommand(bs[i]);

            b2[i].addActionListener(this);

            b2[i].setForeground(Color.red);

        }

        panel=new JPanel();

        panel.setLayout(new GridLayout(4,5));

        panel.add(b1[1]);

        panel.add(b1[2]);

        panel.add(b1[3]);

        panel.add(b2[0]);

        panel.add(b1[4]);

        panel.add(b1[5]);

        panel.add(b1[6]);

        panel.add(b2[1]);

        panel.add(b1[7]);

        panel.add(b1[8]);

        panel.add(b1[9]);

        panel.add(b2[2]);

        panel.add(b1[0]);

        panel.add(b2[3]);

        panel.add(b2[4]);

        panel.add(b2[5]);

        frame.add(tfShow,BorderLayout.NORTH);/*将文本框放置在框架上方*/

        frame.add(panel,BorderLayout.CENTER);/*将装有按钮组的panel放在框架的中心*/

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);/*设置框架窗口的默认窗口关闭操作*/

        frame.setVisible(true);/*设置框架可见*/

    }

    public double getDisplay(){/*返回要显示的结果*/

        return number;

    }

    public void reDisplay(){/*刷新文本域的内容*/

        tfShow.setText(""+getDisplay());

    }

    /*对输入数字的处理*/

    public void numberProcess(int num){

        if(isNumbernum!=0){

            String s1=Integer.toString(num);

            String s2=Integer.toString((int)(this.number));

            this.number=Double.parseDouble(s2+s1);/*对多位数字的处理*/

        }else{

            this.number=num;

        }

        isNumber=true;/*输入连续数字（即多位数字）时为真*/

    } 

    public void operationProcess(char operator){/*根据输入的操作符改变当前操作符*/

        switch(operator){

        case '-':

            this.operator='-';

            break;

        case '+':

            this.operator='+';

            break;

        case '*':

            this.operator='*';

            break;

        case '/':

            this.operator='/';

            break;

        }

        result=number;

        isNumber=false;/*输入操作符时表示输入连续数字的标记变量为假*/

    } 

    public void clear(){

        number=0;

        result=0;

    }  

    public void equal(){/*计算运算结果*/

        switch(operator){

        case '-':

            result=result-number;

            break;

        case '+':

            result=result+number;

            break;

        case '*':

            result=result*number;

            break;

        case '/':

            result=result/number;

            break;

        case ' ':

            result=number;

            break;

        }

        number=result; /*把运算结果赋值给显示变量*/

        isNumber=false;

        operator=' '; 

    } 

    public static void main(String args[]){

        Calculator cal=new Calculator();/*创建计算器*/

    }

    public void actionPerformed(ActionEvent e){

        String command=e.getActionCommand();/*获取按钮激发的操作事件的命令名称*/

        char c=command.charAt(0);/*将按钮命令名称的第一个字符赋值给一个字符c*/

        switch(c){

        case '1':

        case '2':

        case '3':

        case '4':

        case '5':

        case '6':

        case '7':

        case '8':

        case '9':

        case '0':

            int number=Integer.parseInt(command);

            numberProcess(number);/*输入数字的处理*/

            break;

        case '+':

        case '-':

        case '*':

        case '/':

            operationProcess(c);/*算数运算符的处理*/

            break;

        case '=':equal();break;/*计算运算结果*/

        case 'C':clear();break;/*清零*/

        }

        reDisplay(); /*在文本域中显示信息*/

    }

}

运行截图：

Q5: java小程序源代码，简单点的，100多行，谁有啊？？

// My car shop.java

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

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