myframe.java~40~

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");

        Label lb=new Label("欢迎借阅图书");
        Button b2=new Button("查询");
        Button b3=new Button("借阅");
        Button b4=new Button("归还");

    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);
        /*b1.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){

                     }//if
           else{
               tf.setText("学号错误");
               }

                }//if
      }

        }
        );*/

        p2.setFont(new Font("楷体",Font.PLAIN,15));
        p2.add(lb4);
}//init1
    public void init2(){

        Panel p1=new Panel();
        Panel p2=new Panel();
        setLayout(new GridLayout(2,1));
        add(p1);
        add(p2);
        p1.setLayout(new GridLayout(2,1));
        p1.add(lb);
        p1.add(b2);
        p1.add(b3);
        p1.add(b4);

}
   public void actionPerformed(ActionEvent e){
    if((e.getSource()==b1)){
            if(Long.valueOf(tf.getText()).longValue()>=6013110301l&&Long.valueOf(tf.getText()).longValue()<=6013110335l){

            }//if
            else{
                tf.setText("学号错误");
               }
                           }//if
    }


}