guijava代码_GUIjava编程

JAVA中GUI登录界面设计源代码是什么?

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.FlowLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

public class Login {

private JFrame frame = new JFrame("登录");

private Container c = frame.getContentPane();

private JTextField username = new JTextField();

private JPasswordField password = new JPasswordField();

private JButton ok = new JButton("确定");

private JButton cancel = new JButton("取消");

public Login(){

c.setLayout(new BorderLayout());

initFrame();

frame.setVisible(true);

}

private void initFrame() {

//顶部

JPanel titlePanel = new JPanel();

titlePanel.setLayout(new FlowLayout());

titlePanel.add(new JLabel("系统管理员登录"));

c.add(titlePanel,"North");

//中部表单

JPanel fieldPanel = new JPanel();

fieldPanel.setLayout(null);

JLabel l1 = new JLabel("用户名:");

fieldPanel.add(l1);

fieldPanel.add(username);

fieldPanel.add(password);

c.add(fieldPanel,"Center");

//底部按钮

JPanel buttonPanel = new JPanel();

buttonPanel.setLayout(new FlowLayout());

buttonPanel.add(ok);

buttonPanel.add(cancel);

c.add(buttonPanel,"South");

public static void main(String[] args){

new Login();

JAVA GUI 代码问题

因为你在主线程中调用了Threed.sleep(1000) 那么主线程就一直今天这一节暂停.没机会显示数字.

然后当主线程恢复的时候, 如果你设置shuzi.setVisible(true);那么就直接消失了

修改参考,

Thread?t?=?new?Thread(new?Runnable()?{

public?void?run()?{

try?{

Thread.sleep(1000);

shuzi.setVisible(false);//设置不可见

}?catch?(Exception?e1)?{

return;

});

t.start();//启动

JAVA GUI代码问题

import?java.awt.*;

import?java.awt.event.*;

import?javax.swing.*;

class?aa?implements?ActionListener?{

JButton?jb;

public?aa(JButton?jb)?{//构造器,把JButton传递进来,

this.jb?=?jb;

public?void?actionPerformed(ActionEvent?e)?{

jb.setVisible(false);//设置jbutton不可见

public?class?J1?extends?JFrame{

JButton?j1?=?new?JButton("Game1");

J1(){

setTitle("Game");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container?c?=?getContentPane();

c.setLayout(new?FlowLayout());

c.add(j1);

j1.addActionListener(new?aa(j1));//把j1这个按钮传递进过去

setVisible(true);

public?static?void?main(String[]?args)?{

new?J1();

效果图

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