HOLES problem

here is my code for the holes problem…its showing WA…dont know why…

import java.util.Scanner;
import java.io.*;
class HOLES
{
static InputStreamReader isr=new InputStreamReader(System.in);
static BufferedReader br=new BufferedReader(isr);
// A B-2 D O P Q R 
public static void main(String args[])
{
Scanner input=new Scanner(System.in);
int count,i,j,len,t;
//System.out.println("Enter the number of test cases");
try
{
t=input.nextInt();
while(t>0)
//for(i=1;i<=t;i++)
{

//System.out.println("enter the text");
String s=br.readLine();

count=0;
len=s.length();
if(len>=100)
len=99;
for(i=0;i<len;i++)
{
if((s.charAt(i)=='A') || (s.charAt(i)=='D') || (s.charAt(i)=='O') || (s.charAt(i)=='P') || (s.charAt(i)=='Q') || (s.charAt(i)=='R'))
{
count++;
}
else if(s.charAt(i)=='B')
{
count=count+2;
}
else
{
continue;
}
}
System.out.println(count);
t--;
}
}
catch(Exception e)
{
System.err.println(e);
}
}
}

It fails to NPE - http://ideone.com/V1QdIY

Did you test it?

no…i did test it on my pc…worked fyn…i dnt get why is it givin npe

no…i did test it on my pc…worked fyn…i dnt get why is it givin npe

//