Rotate matrix /2-D array 90 degrre left and Right

Write a java program to Rotate matrix 90 degree left and rotate 90 degree right : 

import java.util.Random;

import java.util.Scanner;

public class RotateMatrix {

public static void main(String[] args) {

System.out.println("Enter matrix : ");

int arr[][]=readmatrix();

System.out.println("Matrix is : ");

dispMat(arr);

int arr2[][]=rotate90Left(arr);

System.out.println("90 Degree left rotate matrix is :");

dispMat(arr2);

System.out.println("90 degree right rotate Matrix is :");

arr=rotate90Right(arr);

dispMat(arr);

}

static int[][] rotate90Left(int mat[][]){

ColumnWiseReverse cw=new ColumnWiseReverse();

mat=transposeMat(mat);

cw.colWiseReverse(mat);

return mat;

}

static int[][] rotate90Right(int mat[][]){

RowWiseReverse rw=new RowWiseReverse();

mat=transposeMat(mat);

rw.rowWiseReverse(mat);

return mat;

}

static int[][] transposeMat(int m[][]){

int transmat[][]=new int[m[0].length][m.length];

for(int i=0;i<m.length;i++) {

for(int j=0;j<m[i].length;j++) {

transmat[j][i]=m[i][j];

}

} return transmat;

}

static int[][] readmatrix(){

Random rx=new Random();

Scanner sc=new Scanner(System.in);

System.out.println("Enter Row size and column size :");

int row=sc.nextInt();

int col=sc.nextInt();

int mat[][]=new int[row][col];

System.out.println("Enter Elements in Table : ");

for(int i=0;i<row;i++) {

for(int j=0;j<col;j++) {

mat[i][j]=rx.nextInt(25);

}

sc.close();

}return mat;

}static void dispMat(int mat[][]) {

  for(int i=0;i<mat.length;i++) {

for(int j=0;j<mat[i].length;j++) {

System.out.print(mat[i][j]+" ");

}System.out.println();

}

  }

}