select1.java~3~

该文件中包含有源代码及一部分的文档,该系统是一个小型的英语单词字典的系统.

package logindemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class select1 {
    public select1() {
        JPanel cards;
        JPanel panel3 = new JPanel();
        JPanel card1 = new JPanel();
        card1.add(new JTextArea("请输入书名"));
        card1.add(new JButton("搜索"));
        JPanel card2 = new JPanel();
        card2.add(new JTextArea("请输入作者"));
        card2.add(new JButton("搜索"));
        JPanel card3 = new JPanel();
        card1.add(new JTextArea("请输入类别"));
        card1.add(new JButton("搜索"));
        JPanel card4 = new JPanel();
        card2.add(new JTextArea("请输入出版社"));
        card2.add(new JButton("搜索"));
        ComboItemListenerClass comboListener = new ComboItemListenerClass();
        panel3.add(card1);
        panel3.add(card2);
        panel3.add(card3);
        panel3.add(card4);
        panel3.add(theApp.cards);
        theApp.cards = new JPanel(new CardLayout());
        theApp.add(card1,按书名查询);
        theApp.add(card2,按作者查询);
        theApp.add(card3,按类别查询);
        theApp.add(card4,按出版社查询);

    }
    public void comboItemStateChanged(ItemEvent evt) {
        CardLayout cl = (CardLayout)(cards.getLayout());
        cl.show(cards,(String)evt.getItem());
    }
}
class ComboItemListenerClass implements ItemListener {
    select1 theApp;
    ComboItemListenerClass(select1 theApp) {
        this.theApp = theApp;

    }
    public void itemStateChanged(ItemEvent evt) {
        theApp.comboItemStateChanged(evt);
    }
}