java通过JFrame做一个登录系统的界面完整代码示例

在java的JFrame内通过创建匿名对象的方式做登录界面

									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("登录");

									    JButton bg=new JButton("关闭");

									    //构造无参构造器把主要的方法放在构造器里,然后在main方法里面调

									    public LoginFrame(){

									        setBounds(25,25,250,250);

									        Container c = getContentPane();

									        c.setLayout(new GridLayout(4,2,10,10));

									        c.add(new JLabel("用户名"));

									        c.add(txtname);

									        c.add(new JLabel("密码"));

									        c.add(txtpass);

									        c.add(bl);

									        c.add(bg);

									        setDefaultCloseOperation(EXIT_ON_CLOSE);

									        setVisible(true);

									        //注意：此处是匿名内部类

									        bg.addActionListener(new ActionListener(){

									            public void actionPerformed(ActionEvent e) {

									                // TODO Auto-generated method stub

									                System.exit(0);

									            }

									        }

									        );

									        //注意：此处是匿名内部类

									        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("登陆成功");

									                } else{

									                    System.out.println("登录失败");

									                }

									            }

									        }

									        );

									    }

									    public static void main(String[] args) {

									        new LoginFrame();

									    }

									}