2D Array

public class Array2D {

    public static boolean checkForSquare(int[][] arr , int K , int col , int row)
    {
        if(arr[col][row] == K)
        {
            if(arr[col][row + 1]== K)
            {
                if(arr[col + 1][row]== K)
                {
                    if(arr[col + 1][row + 1]== K)
                    {
                        return true;
                    }
                }
            }
        }
            return false;
    }


    public static void main(String[] args)
    {
        int [][] a = {
                {1,2,3,4,4,6,7,12,23,11,13,14},
                {0,8,6,4,4,9,1,657,876,8,345, 555},
                {0,8,6,75,90,9,1,657,876,8,345, 555},
                {1,2,3,6,6,6,7,12,23,11,13,14},
                {0,8,6,6,6,9,1,657,5,8,6, 7},
                {0,8,6,75,90,9,1,657,4,8,9, 8},
                {1,2,3,4,4,6,7,12,29,29,13,16},
                {0,8,6,4,4,9,1,0,29,29,13, 14},
                {0,8,6,0,0,9,1,657,876,8,3, 25},
                {1,2,3,4,4,6,7,12,23,11,13,14},
                {0,8,6,4,4,9,1,0,1,8,0, 1},
                {0,8,6,0,0,9,1,0,2,8,3, 2},
        };

        System.out.println(checkForSquare(a, 4, 0, 3)); //checks A

        int biggest = 0;                    //checks B
        for(int K = 1 ; K <= 30 ; K ++)
            for(int i = 0 ; i < 11 ; i ++)
                for(int j = 0 ; j < 11 ; j ++)
                {
                    if(checkForSquare(a, K, i, j))
                        if(K > biggest)
                            biggest = K;
                }
        System.out.println(biggest);

    }

}