Exception in thread "main" java.lang.arrayindexoutofboundsexception: 2 at addressbook.loadperson(addressbook.java:27) at addressbook.<init>(addressbook.java:10)

import java.util.*;// Import all the classes in the util package
import javax.swing.*;
import java.io.*;
public class AddressBook
{
 ArrayList persons;
 public AddressBook()
 {
      persons=new ArrayList();
        loadPerson();
 }  
 public void loadPerson()
 {
 String tokens[]=null;
 String name,add,ph;

 try
 {
  FileReader fr=new FileReader("AddressBook.txt");
  BufferedReader br=new BufferedReader(fr);
  String s=br.readLine();
  while(s !=null )
  {
    tokens=s.split(",");
    name=tokens[0];
    add=tokens[1];
    ph=tokens[2];
    PersonInfo p=new PersonInfo(name,add,ph);
    persons.add(p);   
    s=br.readLine();
  }
     br.close();
     fr.close();
  }
  catch(IOException e)
  {
  System.out.println("unable to Load"); 
  }

 }
 public void addPerson()
 {
   String name=JOptionPane.showInputDialog("Enter Name");
   String address=JOptionPane.showInputDialog("Enter Address");
   String phoneNum=JOptionPane.showInputDialog("Enter PhoneNum");

   PersonInfo p=new PersonInfo(name,address,phoneNum);
   persons.add(p);
 }
 public void searchPerson(String n)
 {
  for (int i=0;i<persons.size();i++)
  {
   PersonInfo p=(PersonInfo)persons.get(i);
   if(n.equals(p.name))
  {
   p.printPersonInfo();
  }
  }
 }       
      //remove
 public void deletePerson(String n)
 {
  for (int i=0;i<persons.size();i++)
 {
  PersonInfo p=(PersonInfo)persons.get(i);
  if(n.equals(p.name))
 {
  persons.remove(i);
 }
 }
 }
 public void savePerson()
 {
 try
    {
     FileWriter fr=new FileWriter("mybook.txt");
     PrintWriter pw=new PrintWriter(fr);
     String s="";
     for(int i=0;i<persons.size();i++)
    {
     PersonInfo p=(PersonInfo)persons.get(i);
     s=p.name+","+p.address+","+p.phoneNum;
     pw.println(s);
    }
     pw.close();
     fr.close();    
    }
    catch(IOException e)
    {
     System.out.println("unable to write"); 
    }
 }

}