选择控件.java

200多个自己编的java程序,大家可以学一下.

/*
 * 选择控件.java
 *
 * Created on 2004年9月20日, 下午5:30
 */

/**
 *
 * @author  litertiger
 */
import java.awt.*;
import  java.awt.event.*;

public class 选择控件 extends java.applet.Applet implements ItemListener
{
Choice c1,c2;
TextField t1,t2;
    /** Initialization method that will be called after the applet is loaded
     *  into the browser.
     */
    public void init() {
        setLayout(new GridLayout(2,2));
        c1= new Choice();
        c2=new Choice();
        t1=new TextField(10);
        t2=new TextField(10);
        c1.add("音乐天地");
        c1.add("象棋天地");
        c1.add("扑克天地");
        c2.add("武术天地");
        c2.add("辽宁日报");
        c2.add("上海日报");
        add(c1);
        add(c2);
        add(t1);
        add(t2);
        // TODO start asynchronous download of heavy resources
    }
    
    public void itemStateChanged(ItemEvent e) {
        if(e.getItemSelectable()==c1)
        {
            if(c1.getSelectedIndex()==0)
                t1.setText("音乐天地");
                        if(c1.getSelectedIndex()==1)
                t1.setText("象棋天地");
                        if(c1.getSelectedIndex()==2)
                t1.setText("扑克天地");
        }
          if(e.getItemSelectable()==c2)
          {
                          if(c2.getSelectedIndex()==0)
                t1.setText("武术天地");
                                      if(c2.getSelectedIndex()==1)
                t1.setText("辽宁日报");
                                      if(c1.getSelectedIndex()==2)
                t1.setText("上海日报");
          }
              
    }
    
    // TODO overwrite start(), stop() and destroy() methods
}