Find If The Given Matrix Is A Lower Triangle Matrix - Java Quiz Question

Write a program to find if the given matrix is a lower triangle matrix.
Assume that matrixes are square matrices.

Input (Two Dimensional matrix)	Output (boolean)
`5 0 0 4 3 0 5 2 8`	true
`6 0 0 0 -3 4 0 0 1 9 7 0 5 2 3 8`	true
`0 0 0 0`	true
`0 9 8 8 0 0 6 -4 0`	false
`12 89 77 0 99 66 45 0 111`	false


			

			class IsLowerTriangleMatrix 
 { 

			    public static void main(String s[])
    {
        int input[][] = {{5, 0, 0}, {4, 3, 0}, {5, 2, 8}};
        System.out.println("The given matrix is lower triangle matrix : " + isLowerTriangleMatrix(input));

    }
 
			

			

					    public static boolean isLowerTriangleMatrix(int matrix[][]) {

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