checkboxtest.java

java练习程序

import java.applet.*;
import java.awt.*;
class mypanel1Ch13_1 extends Panel
{
	Checkbox box1,box2,box3;
	mypanel1Ch13_1()
	{
		box1=new Checkbox("音乐");
		box2=new Checkbox("体育");
		box3=new Checkbox("政治");
		add(box1);add(box2);add(box3);
	}
}
class mypanel2Ch13_1 extends Panel
{
	Checkbox box1,box2,box3;
	mypanel2Ch13_1()
	{
		box1=new Checkbox("读书");
		box2=new Checkbox("电脑");
		box3=new Checkbox("电影");
		add(box1);add(box2);add(box3);
	}
}

public class CheckboxTest extends Applet
{
	mypanel1Ch13_1 panel1;
	mypanel2Ch13_1 panel2;
	public void init()
	{
		setLayout(new GridLayout(2,2));
		panel1=new mypanel1Ch13_1();
		panel2=new mypanel2Ch13_1();
		add(panel1);add(new Label( ));
		add(new Label( ));add(panel2);
	}
}