guanliyuan.java

Java编写的物业管理系统

import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class guanliyuan extends Applet implements  ActionListener 
{   
    Label lb1=new Label("请输入有效的用户名和密码.");
    Label lb2=new Label("用户名:");
    Label lb3=new Label("密码:"); 
    TextField tf1=new TextField("Administrator",25);
    TextField tf2=new TextField(25);
    Button b1=new Button("确定");
    Button b2=new Button("取消");
    Panel p1=new Panel( );
    Panel p2=new Panel( );
    Panel p3=new Panel( );
    Panel p4=new Panel( );

    
    public void init( )
    {
       setBackground(Color.cyan);
       setForeground(Color.blue);
       setLayout(new FlowLayout(0,100,30));
      
       p1.add(lb1);
       add("North",p1);
       p2.add(lb2);
       p2.add(tf1);
       add("Center",p2);
       p3.add(lb3);
       p3.add(tf2);
       tf2.setEchoChar('*');
       add("Center",p3);
       p4.setLayout(new FlowLayout(0,60,20));
       p4.add(b1);
       p4.add(b2);
       b1.addActionListener(this);
       b2.addActionListener(this);
       add("Sourth",p4);
    }
    public void actionPerformed(ActionEvent e)
    {
	if(e.getSource( )==b1)
	{
	    if(Integer.parseInt(tf2.getText( ))==3383888)
	    {
	    }
	    else
	    {
	    }
	}
	else if(e.getSource( )==b2)
	{
	}
    }
}