loginframe.java

这是我学java时做的小作业

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LoginFrame extends JFrame implements ActionListener
{   
    JButton b_subit =new JButton("submit");
    JButton b_reset =new JButton("  exit  ");
    JLabel blank1=new JLabel("                                                                                                                                                                                                       ");
	JLabel blank2=new JLabel("                                                                                                         ");
    JLabel blank3=new JLabel("           ");
    TextField loginname = new TextField ("admin",25);
    JPasswordField password = new JPasswordField("123",18);
    static UserJFrame userjframe = new UserJFrame();
    static LoginFrame loginframe = new LoginFrame();
    public LoginFrame()
    { 
       super("动物园管理系统");
      
       JLabel label_1 = new JLabel("      userid  ");
       JLabel label_2 = new JLabel("password");
       System.out.println("1" + label_1.getLocation());//测试
       b_subit.addActionListener(this);
       b_reset.addActionListener(this);

       this.setResizable(false);
       this.setSize(360,200);
        this.setLocation(300,240);                //设置框架尺寸
        this.setBackground(Color.LIGHT_GRAY);     //设置框架背景颜色
        this.setLocation(300,240);               //框架显示在屏幕的位置
        this.setLayout(new FlowLayout());        //框架流布局，居中
        this.add(new JLabel("                                                                                                "));
        this.add(label_1);           //创建标签，添加到框架上 
        this.add(loginname );     //创建文本行
        this.add(this.blank1);
        this.add(label_2);
        this.add(password);             //创建20列的文本行
        this.add(this.blank2);
        this.add(this.blank3);
        this.add(b_subit);              //创建按钮
        this.add(b_reset);
      
        this.addWindowListener(new WinClose());  
//        this.pack();
        
    }
    
    
    
    public void actionPerformed(ActionEvent e)           //单击按钮时触发执行
    {
        if (e.getSource()==b_subit)
        {  if(loginname.getText().equals("admin")&&password.getText().equals("123"))
              {userjframe.setVisible(true);
              loginframe.setVisible(false);
             }
            else {JOptionPane.showMessageDialog(this,"原始默认登陆就是对的,谁让你改的.\n呵呵") ; 
              System.out.println(loginname.getText().equals("admin"));}  
        }
         if (e.getSource()==b_reset){
         	 System.exit(0);
         	}
    }
    
    
    

    public static void main(String arg[])
    {   
       
       loginframe.setVisible(true);                   //显示框架
              
     //  System.out.println(myzoo.showmessage());
    }
}






class WinClose implements WindowListener
{
    public void windowClosing(WindowEvent e)     //单击窗口关闭按钮时触发并执行
    {                                            //实现WindowListener接口中的方法
        System.exit(0);                          //结束程序运行
    }

    public void windowOpened(WindowEvent e)         {  }
    public void windowActivated(WindowEvent e)      {  }
    public void windowDeactivated(WindowEvent e)    {  }
    public void windowClosed(WindowEvent e)         {  }
    public void windowIconified(WindowEvent e)      {  }
    public void windowDeiconified(WindowEvent e)    {  }
}