java小程序代码分享,小程序源码分享

想设计一个java小程序，在文本框输入一个数，然后每一秒＋1，求给完整代码

package com.demo;

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Timer;

import java.util.TimerTask;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextField;

public class TimerTest {

private Timer timer;

private JTextField field;

private JButton button;

private boolean flag = true;

public TimerTest() {

timer = new Timer();

addview();

}

private void addview() {

JFrame frame = new JFrame("Timer test");

field = new JTextField();

field.setPreferredSize(new Dimension(0, 30));

button = new JButton("start");

button.setPreferredSize(new Dimension(100, 30));

button.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

if (flag) {

auto();

flag = false;

button.setText("stop");

} else {

timer.cancel();

flag = true;

button.setText("start");

}

}

});

frame.add(field, BorderLayout.CENTER);

frame.add(button, BorderLayout.EAST);

frame.setBounds(200, 200, 300, 60);

frame.setVisible(true);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new TimerTest();

}

private void auto() {

timer.schedule(new TimerTask() {

@Override

public void run() {

int num = Integer.parseInt(field.getText().trim());

num += 1;

field.setText(num + "");

auto();

}

}, 1000);

}

}

相关问答

Q1: 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

Q2: 急求这个十分简单的JAVA小代码详细注释！！

几年没有碰swing了，给你详细注释了。仔细看。希望对你有所帮助。

import java.awt.*;//java抽象窗口工具包

import java.awt.event.*;//java抽象窗口工具包组件所激发的各类事件的接口和类

public class Test5{//类名

Frame f;//定义一个Frame窗体

TextArea center;//文本域

Label la1,la2,la3;//三个标签

Panel east,south,north;//三块面板

Button b1,b2,b3,b4;//四个按钮

Choice l1;//下拉单选框

TextField t1;//文本域

// textfield只有一行可写

// textarea是一个区域,可以有很多行

public static void main(String[] args){//主函数，程序入口

Test mb = new Test();

mb.go();//调用go方法，初始化界面

}

private void go(){

f = new Frame("留言版程序");//标题

f.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent evt){

f.setVisible(false);

System.exit(0);

//System.exit(0) 0--正常结束程序 1--异常关闭程序

}

});

f.setBounds(0,0,600,400);//布局大小

f.setLayout(new BorderLayout());//显示方式

f.setResizable(false);

//下面都将控件按钮初始化，你懂得

north = new Panel();

south = new Panel();

east = new Panel();

center = new TextArea("留言内容：");

center.setEditable(false);

b1 = new Button("清屏");

b2 = new Button("至顶");

b3 = new Button("至尾");

la1 = new Label("留言版");

la2 = new Label("你");

la3 = new Label(" 地说:");

t1 = new TextField(20);

b4 = new Button("提交");

l1 =new Choice();

l1.add("微笑 ");

l1.add("生气 ");

l1.add("伤心 ");

f.add(BorderLayout.NORTH,north);//布局

f.add(BorderLayout.SOUTH,south);//布局

f.add(BorderLayout.EAST,east);//布局

f.add(BorderLayout.CENTER,center);//布局

north.add(BorderLayout.CENTER,la1);

south.add(la2);//把东西加到面板上

south.add(l1);

south.add(la3);

south.add(t1);//把东西加到面板上

south.add(b4);

east.setLayout(new GridLayout(9,0,1,10));

east.add(b1);

east.add(b2);

east.add(b3);

f.setVisible(true);//可视化

b4.addActionListener(new ActionListener(){//点击提交按钮产生事件

public void actionPerformed(ActionEvent e){

String text1,text2;

text1 = l1.getSelectedItem();

text2 = t1.getText();

t1.setText(null);

if(t1.getText() != ""){//将下拉单选框的内容和你输入在文本框的内容显示在中间面板上

center.append("\n");

center.append(text1);

center.append(text2);

}

}

});

b1.addActionListener(new ActionListener(){//清屏按钮事件，只留下中间面板显示：“留言内容:”，其余清楚

public void actionPerformed(ActionEvent e){

center.setText("留言内容:");

}

});

b2.addActionListener(new ActionListener(){//至顶按钮事件，光标焦点至顶

public void actionPerformed(ActionEvent e){

center.requestFocusInWindow();

center.setCaretPosition(8);

}

});

b3.addActionListener(new ActionListener(){//至尾按钮事件，光标焦点至尾

public void actionPerformed(ActionEvent e){

center.requestFocusInWindow();

center.setCaretPosition(center.getText().length());

}

});

}

}

Q3: java编写一个记事本小程序，接着下面的代码写，求大神解救！实现新建，保存，打开功能就行！

package tuxingjiemian;

import javax.swing.*;

import javax.swing.event.*;

import java.awt.*;

import java.awt.event.*;

import java.io.File;

import java.io.PrintStream;

public class jishiben extends JFrame {

JPanel jp=new JPanel();

JFrame find_replace=new JFrame();

JMenu file=new JMenu("文件");

JMenu edit=new JMenu("编辑");

JMenu help=new JMenu("帮助");

JMenuBar menubar=new JMenuBar();

JTextArea aa=new JTextArea();

class Open implements ActionListener {

public void actionPerformed(ActionEvent e) {

JFileChooser jf= new JFileChooser();

jf.showOpenDialog(jishiben.this);

try {

PrintStream p=new PrintStream(jf.getSelectedFile().getPath());

} catch (Exception e2) {

}

}

}

class Save implements ActionListener {

public void actionPerformed(ActionEvent e) {

JFileChooser jf= new JFileChooser();

jf.showSaveDialog(jishiben.this);

try {

PrintStream p=new PrintStream(jf.getSelectedFile().getPath());

} catch (Exception e2) {

}

}

}

public jishiben(){

this.setTitle("记事本");

this.setSize(500, 500);

this.setLayout(new BorderLayout());

JMenuItem open=new JMenuItem("打开");

open.addActionListener(new Open());

JMenuItem save=new JMenuItem("保存");

save.addActionListener(new Save());

JMenuItem exit=new JMenuItem("退出");

exit.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

System.exit(0);

}

});

file.add(open);

file.add(save);

file.addSeparator();

file.add(exit);

menubar.add(file);

this.add(new JScrollPane(aa),BorderLayout.CENTER);

JMenuItem copy=new JMenuItem("复制");

JMenuItem past=new JMenuItem("粘贴");

JMenuItem delete=new JMenuItem("删除");

JMenuItem find=new JMenuItem("查找");

JMenuItem replace=new JMenuItem("替换");

copy.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

jishiben.this.aa.copy();

}

});

past.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

jishiben.this.aa.paste();

}

});

delete.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

jishiben.this.aa.replaceSelection(null);

}

});

edit.add(copy);

edit.add(past);

edit.add(delete);

edit.add(find);

edit.add(replace);

menubar.add(edit);

help.add(new JMenuItem("帮助"));

menubar.add(help);

this.add(menubar,BorderLayout.NORTH);

this.setVisible(true);

this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new jishiben();

}

};

Q4: java如何设计一个云端资源共享小程序，代码怎么写？

你说的是Java应用,还是微信里面的小程序? 小程序前端代码是用h5+css+js技术实现的;而Java可以开发手机app、桌面应用、小程序后端,这就需要学习。开发小...

Q5: 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