testchoice.java

有大量的java的实例

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

public class TestChoice extends Applet implements ItemListener
{
 Choice size;
 Button btn;
 public void init()	
 {
   size = new Choice();
   size.add("10");
   size.add("14");
   size.add("18");
   add(size);
   btn = new Button("效果");
   add(btn);
   size.addItemListener(this);
 }
 public void itemStateChanged(ItemEvent e)
 {
   Choice temp;
   Font oldF;
   String s;
   int si;
   if(e.getItemSelectable() instanceof Choice)
   {
	oldF = btn.getFont();
	temp = (Choice)(e.getItemSelectable());
	s = temp.getSelectedItem();
	si = Integer.parseInt(s);
	btn.setFont(new Font(oldF.getName(),oldF.getStyle(),si));
   }
 }
}