public class shape extends Applet implements itemListener
{
Chekbox rect,circle,line;
ChekboxGroup cbg;

String msg;
String s1=”rect”;
String s2=”circle”;
string s3=”line”;
public void init()
{
cbg=new checkboxGroup();

rect = new checkbox(“rect”,cbg,true);
circle = new Checkbox(“circle”,cbg,false);
line = new Checkbox(“line”,cbg,false);

add(rect);
add(circle);
add(line);

rect.addItemListener(this);
circle.addItemLisener(this);
line.addItemListener(this);
}
public void item StateChanged(ItemEvent ie)
{
repaint();
}
public void paint(Graphics g)
{
msg=cbg.getSelctedCheckbox().getLabel();
if(msg.compareTo(s1)==0)
{
g.drawRect(10,40,40,80);
}
else if(msg.compareTo(s2)==0)
{
g.drawOvel(10,40,80,80);
}
else
{
g.drawLine(0,0,100,100);
}
}
}