登录界面及事件处理

     最近学习了GUI和事件处理，如今已经可以简单的做一个程序，并且加入事件处理了。

     其中，我使用了复选框的组件，它的代码如下：  

     JCheckBox jc1 = new JCheckBox("记住密码");
     JCheckBox jc2 = new JCheckBox("自动登录");

     通过这两句代码添加了两个复选框

package denglu;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.*;



public class zuoye {

    public static void main(String[]args){
        JFrame frm=new JFrame("MM");
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        


        JPanel soPanel = new JPanel();
        
        frm.add(soPanel,BorderLayout.NORTH);

        JPanel topPanel = new JPanel();
        frm.add(topPanel,BorderLayout.EAST );
        //图
        Icon t3 = new ImageIcon("1191333.gif");
        JLabel l71 = new JLabel(t3); 
        l71.setBounds(0,0,t3.getIconWidth(),t3.getIconHeight());       
        soPanel.add(l71);
        
        
        JPanel wp = new JPanel(new FlowLayout(FlowLayout.CENTER));
        JPanel iwp = new JPanel();
        wp.add(iwp);
        iwp.setLayout(new GridLayout(4, 1));
        JPanel p1 = new JPanel();
        JPanel p2 = new JPanel();
        JPanel p3 = new JPanel();
        JPanel p4 = new JPanel();
        JLabel l1 = new JLabel("账号");
        JLabel l2 = new JLabel("密码");
        JTextField j = new JTextField(15);
        JPasswordField j1 =new JPasswordField(15);
        JCheckBox jc1 = new JCheckBox("记住密码");
        JCheckBox jc2 = new JCheckBox("自动登录");
        JButton jb = new JButton("登录");
        JButton jb1 = new JButton("退出");
        //事件处理弹窗
        
        jb.addMouseListener(new MouseListener() {
            @Override
            public void mouseReleased(MouseEvent arg0) {
                if(j.getText().equals("notebook")&&
                        String.valueOf(j1.getPassword()).equals("123"))
                        {
                    frm.setVisible(false);
    Icon icon=new ImageIcon("1966053082.jpg");
                     JOptionPane.showMessageDialog(null, "登陆成功", 
                             "欢迎回来",JOptionPane.INFORMATION_MESSAGE,icon);
                        }
                        else
                        {
                            JOptionPane.showMessageDialog(null, "密码错误", 
                                     "错误",JOptionPane.ERROR_MESSAGE);
                        }    
                        }

            @Override
            public void mouseClicked(MouseEvent e) {
                // TODO Auto-generated method stub
                
            }

            @Override
            public void mouseEntered(MouseEvent e) {
                // TODO Auto-generated method stub
                
            }

            @Override
            public void mouseExited(MouseEvent e) {
                // TODO Auto-generated method stub
                
            }

            @Override
            public void mousePressed(MouseEvent e) {
                // TODO Auto-generated method stub
                
            }});



        p1.add(l1);
        p1.add(j);
        iwp.add(p1);
        p2.add(l2);
        p2.add(j1);
        iwp.add(p2);
        p3.add(jc1);
        p3.add(jc2);
        iwp.add(p3);
        p4.add(jb);
        p4.add(jb1);
        iwp.add(p4);
        
        frm.add(wp, BorderLayout.CENTER);
        
        ButtonHandler jb1Handler=new ButtonHandler();
        
        jb1.addActionListener(jb1Handler);
frm.setBounds(400,200,500,400);
        frm.setVisible(true);
        
    }
}
    class ButtonHandler implements ActionListener{
        public void actionPerformed(ActionEvent e){
            System.exit(0);
        }
    }

    全部代码如上

    运行界面如下