在java的JFrame內(nèi)通過(guò)創(chuàng)建匿名對(duì)象的方式做登錄界面
package com.sxt; import java.awt.Container; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; public class LoginFrame extends JFrame{ JTextField txtname=new JTextField(); JPasswordField txtpass=new JPasswordField(); JButton bl=new JButton("登錄"); JButton bg=new JButton("關(guān)閉"); //構(gòu)造無(wú)參構(gòu)造器把主要的方法放在構(gòu)造器里,然后在main方法里面調(diào) public LoginFrame(){ setBounds(25,25,250,250); Container c = getContentPane(); c.setLayout(new GridLayout(4,2,10,10)); c.add(new JLabel("用戶名")); c.add(txtname); c.add(new JLabel("密碼")); c.add(txtpass); c.add(bl); c.add(bg); setDefaultCloseOperation(EXIT_ON_CLOSE); setVisible(true); //注意:此處是匿名內(nèi)部類 bg.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub System.exit(0); } } ); //注意:此處是匿名內(nèi)部類 bl.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub String name = txtname.getText(); String pass = txtpass.getText(); if(name.equals("tom")&&pass.equals("123")){ System.out.println("登陸成功"); } else{ System.out.println("登錄失敗"); } } } ); } public static void main(String[] args) { new LoginFrame(); } }