myframe.java~148~

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.setVisible(false);
                  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.RIGHT);
    Label lb3=new Label("",Label.RIGHT);
    Label lb4=new Label("",Label.CENTER);
    Label lb5=new Label("",Label.LEFT);
        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(4);
        Panel p1=new Panel();
       Panel p2=new Panel();
       Panel p3=new Panel();
       Panel p4=new Panel();
       Panel p5=new Panel();
       Panel p6=new Panel();
       int i;





    MyFrame2(){
        super("图书馆借阅系统");
        setSize(600,400);
        setLocation(200,200);
        setBackground(Color.pink);
        setLayout(new GridLayout(2,1,30,0));

    }
    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(2,1,20,0));
       p2.add(p5);
       p2.add(p6);
       p5.setFont(new Font("楷体",Font.ITALIC,20));
       p5.setLayout(new BorderLayout(10,0));
       p5.add(new Label(),BorderLayout.NORTH);
       p5.add(new Label(),BorderLayout.SOUTH);

       p5.add(lb2,BorderLayout.WEST);
       p5.add(tf,BorderLayout.CENTER);

       p5.add(b5,BorderLayout.EAST);

       p5.setVisible(false);
       p6.setFont(new Font("楷体",Font.PLAIN,20));
       p6.setLayout(new GridLayout(2,3,0,40));
       p6.add(new Label());
       p6.add(new Label());
       p6.add(new Label());
       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(1,3,0,30));
       b2.setBackground(Color.blue);
       b3.setBackground(Color.GREEN);
       b4.setBackground(Color.orange);
       p4.add(b2);
       p4.add(b3);
       p4.add(b4);
       b2.addActionListener(this);
       b3.addActionListener(this);
       b4.addActionListener(this);
       b5.addActionListener(this);
       mf.setVisible(true);
}

    public void actionPerformed(ActionEvent e){
        char ch=e.getActionCommand().charAt(0);
        switch (ch){
        case '查':{this.removeNotify();break;}
        case '借':{if(i==3){
                p5.setVisible(true);
                tf.setText("");
                p6.setVisible(false);
                i=1;
            }
            else{
            p5.setVisible(true);i=1;break;}}
        case '归':{p5.setVisible(true);tf.setText("");p6.setVisible(false);i=2;break;}
        case 'O':if(Long.valueOf(tf.getText()).longValue()>=10000001&&Long.valueOf(tf.getText()).longValue()<=10000020){
                if(i==1){lb3.setText("借阅成功!");
                    lb4.setText("欢迎下次光临!");
                    lb5.setText("再见!");
                      p6.setVisible(true);}
                  else{lb3.setText("归还成功!");
                    lb4.setText("欢迎下次光临!");
                    lb5.setText("再见!");
                    i=3;
                      p6.setVisible(true);}
                }
                else {
                    if (i==1) {
                        lb3.setText("对不起!");
                        lb4.setText("借阅失败!");
                        lb5.setText("请重试!");
                        p6.setVisible(true);
                    } else {
                        lb3.setText("对不起!");
                        lb4.setText("归还失败!");
                        lb5.setText("请重试!");
                        p6.setVisible(true);
                           }
                    break;
                }
            }//switch
        }//actionPerformed
}