Program to show two listed choices and print their table

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Mullist extends Applet implements ItemListener{
Choice ch1,ch2;
List l1;
int c,d;
public void init()
{
ch1=new Choice();
ch2=new Choice();
l1=new List(10);
for(int i=1; i<=100; i++)
{
ch1.add(String.valueOf(i));
ch2.add(String.valueOf(i));
}
add(ch1);
add(ch2);
add(l1);
ch1.addItemListener(this);
ch2.addItemListener(this);

}
public void itemStateChanged(ItemEvent e) {
if(e.getSource()==ch1)
{
c=Integer.parseInt(ch1.getSelectedItem());
}
if(e.getSource()==ch2)
{
d=Integer.parseInt(ch2.getSelectedItem());
}

for(int i=1; i<=d; i++)
{
l1.add(""+c+"x"+i+"="+c*i+"\n");
}
}

}

output: