ArrayIndexOutOfBoundException...

[Rashid Ali]

Dear folks
The following program works fine but when i try to calculate the average of the int arrays it gives the 'arrays out of bound exceptions'.
Could anybody helps me how to rectify this problem. Or suggest me how can i calculate the average of int arrays in the last of my output.
Thanks in advance.

public class CalcOfStringArrays
{
    public static void main( String args[] )
    {
        String[] months = 
        {
            "January   " , "February  " , "March     " ,
            "April     " , "May       " , "June      " ,
            "July      " , "August    " , "September " ,
            "October   " , "November  " , "December  " 
        } ;
        int i ;
        int sum = 0 ;
        double average = 0.0 ;  
        int randomNo[] = new int[ 12 ];
        for ( i = 0 ; i < randomNo.length ; i++ )
        {
            randomNo[ i ] = (int) ( 1 + Math.random() * 100 ) ;
            System.out.println( months[ i ] + "\t" + 
                                randomNo[ i ] ) ;  
            sum += randomNo[i] ;
            
        }
            System.out.println( "\t\t" + sum ) ;  
            // here it fails to produce the result...            
            average += randomNo[ i ] ;
            System.out.println( "Average: " + 
                      ( average / randomNo.length ) ) ;         
    }
}

[Raghavendra Holla]

Simple..
problem is with your statement
average += randomNo[ i ] ;
is out side the loop and i at that time is 12 !!!.
Put it inside the loop.

[Rashid Ali]

Great! thanks it's solved.
I was doing so with sum but not with average.
It's perfectly running now.
Thanks again.
Raashed