Chapter 7, Problem 24E

Explanation of Solution

Method “rotateLeft()” to rotate the image in the counter clock wise or to call the “rotateRight()” to rotate the image in the clock wise:

import java.awt.Graphics;

import java.awt.Image;

import java.io.File;

import java.io.FileNotFoundException;

import java.util.Scanner;

//Definition of class Test

public class Test

{

    //Definition of main class

    public static void main(String[] args)

    {

        //Create an object for DrawingPanel

DrawingPanel drawpanel = new DrawingPanel(250, 250);

        //Create an object for Image

Image image = drawpanel.loadImage("Smiles.png");

        //Create an object for Graphics

        Graphics graph = drawpanel.getGraphics();

        //Set the panel

        graph.drawImage(image, 0, 0, drawpanel);

        //Call the method transpose

        rotateLeft(drawpanel);

    }

    //Definition of method rotateLeft   

    public static void rotateLeft(DrawingPanel panel)

    {

        //Create an array to store the pixels

        int[][] pixels = panel.getPixelsRGB();

//Create a two dimensional array to store the pixel

int[][] newPixels = new int[pixels[0].length][pixels.length];

        //Traverse the row of the image

        for (int row = 0; row < pixels.length; row++)

        {

            //Traverse the column of the image

for (int col = 0; col < pixels[0].length; col++)

            {

                //Assign col to "newRow"

                int newRow = col;

                //Get the values for the "newCol"

int newCol = pixels...