this is my code... i dont anderstend way the class dont work...

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Panel;


public class Caldesinger 
{
 public Panel p1=new Panel();
 public Button[] arr=new Button[20];
 public String[] name = {"9","8","7","6","5","4","3","2","1","0","+","-","*","/",".","cos","sin","=","pow"};
 public Caldesinger()
 {
  for (int i = 0; i < arr.length; i++) 
  {
   this.arr[i]=new Button(""+name[i]);
  }



 }

 public Panel getP1() {
  return p1;
 }

 public void setP1(Panel p1) {
  this.p1 = p1;
 }

 public Button[] getArr() {
  return arr;
 }

 public void setArr(Button[] arr) {
  this.arr = arr;
 }

 public Object c()
 {
  this.p1.setLayout(new GridLayout(4,15));
  for (int i = 0; i < arr.length; i++) 
  {
   arr[i].setBackground(Color.LIGHT_GRAY);
   arr[i].setForeground(Color.orange);
   p1.add(arr[i]);

  }
  this.p1.setLayout(new GridLayout(4,15));

  return this;
 }
}

the class desinge the applet

this is the main:

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


public class Mainapp extends Applet implements ActionListener
{

 Caldesinger desinge=new Caldesinger ();



 public void init()
 {

  this.setLayout(new BorderLayout()); 

  this.desinge.c();
 }
 public void ActionPerformed(ActionEvent arg0)
 {
  for (int i = 0; i <20; i++)
  {
   if(arg0.getSource()== this.desinge.arr[i]);

  } 
 } 
}

way the method c does not work? the method desinge the applet