第二周作业

本周的作业对我来说有点困难，so借鉴了一下舍友的程序。
整体来说还能看的过去，不过我会继续努力的，我希望在以后的日子里我可以学习的更加透彻。

'
package DLJM;

import java.awt.Color;
import java.awt.Component;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;

public class dljm{
public static void main(String[] args) {
//创建界面
final JFrame frm = new JFrame("欢迎登录");
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frm.setLayout(null);

//副窗口
final JDialog jd = new JDialog(frm, "登录成功");
jd.setBounds(500,250,300,150);

//创建用户名和密码
JLabel label1 = new JLabel("用户名:");
label1.setBounds(50, 40, 120, 25);
JLabel label2 = new JLabel("密     码:");
label2.setBounds(50, 80, 120, 25);
frm.add(label1);
frm.add(label2);
//组合框
JComboBox text = new JComboBox();
text.setBounds(120, 40, 150, 25);
text.addItem("张晋鑫");
text.setEditable(true);//组合框可编辑
JPasswordField password = new JPasswordField("9527");
password.setBounds(120, 80, 150, 25);   
frm.add(text);
frm.add(password);

//创建按钮
JButton yes = new JButton("登录");
yes.setBounds(90, 140, 90,30);
yes.setBackground(Color.yellow);
JButton out = new JButton("退出");
out.setBounds(190, 140, 90, 30);
out.setBackground(Color.yellow);
frm.add(yes);
frm.add(out);

String account = text.getSelectedItem().toString();
String  pwd = new String(password.getPassword());

//创建监听效果        
yes.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent arg0) {
        // TODO Auto-generated method stub
        if(account.equals("张晋鑫")&&pwd.equals(password.getText()))   
                {
            JOptionPane.showMessageDialog(null,"            "+"您的用户名:"+"      "+account+"
            "+"您的密    码："+"      "+pwd,"登陆成功", JOptionPane.PLAIN_MESSAGE);   
        }
        else{
           JOptionPane.showMessageDialog(null, "错误", "提示", JOptionPane.ERROR_MESSAGE);
        }
    }   
});

out.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent arg0) {
        // TODO Auto-generated method stub
        System.exit(0);
    }
});



frm.setBounds(450,230,400,240);
frm.setVisible(true);

}

}'

长得丑真怕吓到人！