Equilibrium index of an array

Equilibrium index of an array is an index such that the sum of elements on whose left is equal to sum of elements on right  in java . For example, in an array A:

A[0] = -7, A[1] = 1, A[2] = 5, A[3] = 2, A[4] = -4, A[5] = 3, A[6]=0

3 is an equilibrium index, because:
A[0] + A[1] + A[2] = A[4] + A[5] + A[6]

6 is also an equilibrium index, because sum of zero elements is zero, i.e., A[0] + A[1] + A[2] + A[3] + A[4] + A[5]=0

7 is not an equilibrium index, because it is not a valid index of array A.

public class EquilibriumJavaInHouse { public static void main(String[] args)      { int arr[]={-5, 2, 4, 2, -4, 7, -4};         int i, j;         int leftsum, rightsum;         int count=0;                       int arraylength=arr.length;         for (i = 0; i < arraylength; ++i)          {             leftsum = 0;               rightsum = 0;                           for (j = 0; j < i; j++)                 leftsum += arr[j];                         for (j = i + 1; j < arraylength; j++)                 rightsum += arr[j];                         if (leftsum == rightsum)             {               System.out.println("Equilibirium found at"+i);               count++;             }                          }         if(count==0)         System.out.println("No Equilibirium found ");         } }

OutPut:

Equilibrium index of an array