Please explain in detail.

What is the output of the following code?

 public class Test { public static void main(String[] args) { int[][] x = {{2, 1}, {1, 7, 1}}; System.out.println(m(x)); } public static int m(int[][] m) { int result = m[0][1]; for (int i = 0; i < m.length; i++) for (int j = 0; j < m[i].length; j++) if (result < m[i][j]) result = m[i][j]; return result; } }