dl.java

人员管理系统

import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.*;



public class DL extends JFrame{
	private JLabel in,xingming,mima;
	private JTextField xm1,mm1;
	private JButton y;
	public DL(){
		super("登录企业管理系统");
		Container container=getContentPane();
		in=new JLabel("********登录*******");
		xingming=new JLabel("用户名");
		mima=new JLabel("密  码");
		y=new JButton("确定");
		
		mm1=new JTextField(10);
		xm1=new JTextField(10);
		
		JPanel j1=new JPanel();
		JPanel j2=new JPanel();
		JPanel j3=new JPanel();
		
		container.setLayout(new BorderLayout());
		j1.setLayout(new FlowLayout());
		j2.setLayout(new FlowLayout());
		j3.setLayout(new FlowLayout());
		
		j1.add(in);
		j2.add(xingming);
		j2.add(xm1);
		j2.add(mima);
		j2.add(mm1);
		j3.add(y);
		
		container.add(j1,BorderLayout.NORTH);
		container.add(j2,BorderLayout.CENTER);
		container.add(j3,BorderLayout.SOUTH);
		
		y.addActionListener(

        new ActionListener() {
                 public void actionPerformed( ActionEvent event )
            		{
            			 
                			sure();
                		//else return;
                			
            		}
           } 
        );
        
	}
	public void sure(){
		if((xm1.getText().equals("王瑞雪"))&&(mm1.getText().equals("24"))){
//        	ALL al1=new ALL();
            menu m=new menu();
        	setSize(300,200);
		   setVisible(true);
		}
		//else return;
        else 
        {
        	JOptionPane.showMessageDialog(null,"密码错误","Error",JOptionPane.ERROR_MESSAGE);
    		xm1.setText("");
    		mm1.setText("");
    	}
    }
	public static void main(String args[]){
		DL dl=new DL();
		dl.setSize(200,150);
		dl.setVisible(true);
		
	}
		
}