public class Matrix { private int mat[][]; public Matrix(int[][] m) { mat = m; } public void reverseAllRows() { for(int i = 0; i < mat.length; i++) { ArrayUtil.reverseArray(mat[i]); } } public static void reverseMatrix() { } public void printMat() { for(int i = 0; i < mat.length; i++) { ArrayUtil.printArray(mat[i]); System.out.println(""); } } }