xiaoshou.java

Java的一个程序

import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;
import java.awt.event.*;
class B extends Frame implements ActionListener
{   
	Box baseBox,box1,box2;
	Button Xsdl,b2;
	Label l1,l2;
	TextField t1,t2;
	B(String s)
	{ super(s);
    
    box1=Box.createVerticalBox();
    l1=new Label("用户名");
    box1.add(l1);
    box1.add(Box.createVerticalStrut(10));
    
	l2=new Label("密码");
    box1.add(l2);
    box1.add(Box.createVerticalStrut(10));
	 
	 Xsdl=new Button("确定");
	 
	 Xsdl.addActionListener(this);
     box1.add(Xsdl);
     box1.add(Box.createVerticalStrut(10));

     box2=Box.createVerticalBox();
     t1=new TextField(12);
     t1.addActionListener(this);
	 box2.add(t1);
	 box2.add(Box.createVerticalStrut(10));
     t2=new TextField(12);
     t2.setEchoChar('*');
     t2.addActionListener(this);
	 box2.add(t2);
	 box2.add(Box.createVerticalStrut(10));
     b2=new Button("退出");
     b2.addActionListener(this);
     box2.add(b2);
     box2.add(Box.createVerticalStrut(10));

	 baseBox=Box.createHorizontalBox();
     baseBox.add(box1);
	 baseBox.add(Box.createHorizontalStrut(10));
	 baseBox.add(box2);
	 setLayout(new FlowLayout());
	 add(baseBox);
	 setBackground(Color.cyan);
	 setBounds(200,200,250,180);

     addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e)
				{
				setVisible(false);
			}
		});

	 setVisible(true);
}
public void actionPerformed(ActionEvent e)
	{
	 if(e.getSource()==b2)
	  { 
		setVisible(false);
	  }
	if(e.getSource()==Xsdl)
	{String s1=t1. getText();
     String s2=t2. getText();
    if(s1.equals("computer")&&s2.equals("123456"))

		{Pp c=new Pp("销售员界面");}
	}
	}  
}
public class Xiaoshou 
{
	public static void main(String args[])
	{
		B  caipiao=new B("销售员登陆系统");
	}
}