myframe.java~93~

简单的代码

package xue;

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



class MyFrame extends Frame implements ActionListener{
    Label lb1=new Label("欢迎光临图书馆",Label.CENTER);
        Label lb2=new Label("登陆界面",Label.CENTER);
        Label lb3=new Label("输入学号");
        Label lb4=new Label("Copyright:计算机系06级3班 薛伟伟",Label.LEFT);
        TextField tf=new TextField("",10);
        Button b1=new Button("确定");

    public MyFrame(){
        super("图书馆借阅系统");
        setSize(600,400);
        setLocation(200,200);
        setBackground(Color.orange);
        }
    public void init1(){

        Font f=new Font("楷体",Font.PLAIN,30);
        Panel p1=new Panel();
        Panel p2=new Panel();
        setLayout(new GridLayout(4,1));
        setFont(f);
        add(lb1);
        add(lb2);
        add(lb3);
        add(p1);
        add(p2);
        p1.add(lb3);
        p1.add(tf);
        p1.add(b1);
        b1.addActionListener(this);
        /*this.addKeyListener(new KeyAdapter(){
               public void keyTyped(KeyEvent e) {
                   if(e.getSource().equals(KeyEvent.VK_ENTER)){
                     if(Long.valueOf(tf.getText()).longValue()>=6040021310l&&Long.valueOf(tf.getText()).longValue()<=6013110335l){
                         removeNotify();
                  new MyFrame2().init2();
                     }//if
           else{
               tf.setText("学号错误");
               }
               }//if
                  }
            });*/

        p2.setFont(new Font("楷体",Font.PLAIN,15));
        p2.add(lb4);
}//init1

   public void actionPerformed(ActionEvent e){
    if((e.getSource()==b1)){
            if(Long.valueOf(tf.getText()).longValue()>=6013110301l&&Long.valueOf(tf.getText()).longValue()<=6013110335l){
            this.removeNotify();
                  new MyFrame2().init2();
        }//if
            else{
                tf.setText("学号错误");
               }
                           }//if
    }
}

class MyFrame2 extends Frame implements ActionListener{
    Label lb=new Label("欢迎借阅图书",Label.CENTER);
    Label lb2=new Label("输入图书条码");
    Label lb3=new Label("借阅成功!");
    Label lb4=new Label("欢迎下次光临!");
    Label lb5=new Label("再见!");
        Button b2=new Button("查询");
        Button b3=new Button("借阅");
        Button b4=new Button("归还");
        Button b5=new Button("OK");
        TextField tf=new TextField();
        Panel p1=new Panel();
       Panel p2=new Panel();
       Panel p3=new Panel();
       Panel p4=new Panel();
       Panel p5=new Panel();
       Panel p6=new Panel();





    MyFrame2(){
        super("图书馆借阅系统");
        setSize(600,400);
        setLocation(200,200);
        setBackground(Color.pink);
        setLayout(new GridLayout(2,1,50,0));

    }
    public void init2(){
       MyFrame2 mf=new MyFrame2();
       mf.addWindowListener(new WindowAdapter() {
              public void windowClosing(WindowEvent e) {
                  System.exit(0);
              }
         });


       mf.add(p1);
       mf.add(p2);
       p1.setLayout(new GridLayout(2,1));
       p1.add(p3);
       p1.add(p4);
       p2.setLayout(new GridLayout(2,1,10,0));
       p2.add(p5);
       p2.add(p6);
       p5.setFont(new Font("楷体",Font.ITALIC,20));
       p5.setLayout(new GridLayout(1,3,0,1000));
       p5.add(lb2);
       p5.add(tf);
       p5.add(b5);

       //p5.setVisible(false);
       p6.setFont(new Font("楷体",Font.PLAIN,20));
       p6.setLayout(new GridLayout(1,3,0,200));
       p6.add(lb3);
       p6.add(lb4);
       p6.add(lb5);
       //p6.setVisible(false);
       p3.setFont(new Font("楷体",Font.PLAIN,30));
       p3.add(lb);

       p4.setFont(new Font("楷体",Font.PLAIN,30));
       p4.setLayout(new GridLayout(1,3,0,300));
       b2.setBackground(Color.blue);
       b3.setBackground(Color.GREEN);
       b4.setBackground(Color.orange);
       p4.add(b2);
       p4.add(b3);
       p4.add(b4);
       mf.setVisible(true);
}

    public void actionPerformed(ActionEvent e){
        char ch=e.getSource().toString().charAt(1);
        switch (ch){
        case '2':break;
        case '3':{p5.setVisible(true);validate();break;}
        case '4':break;
        case '5':if(Long.valueOf(tf.getText()).longValue()>=1000001&&Long.valueOf(tf.getText()).longValue()<=1000020){
                p6.setVisible(true);
                }
                else {
                    lb3.setText("对不起");
                    lb4.setText("借阅失败");
                    lb5.setText("请重试");
                    p6.setVisible(true);
                }
            break;

        }//switch
    }//actionPerformed


}