***Need to modify Java Code below to help monitor the execution speeds of the matrix operations.

PROJECT DESCRIPTION

Examine the given program that performs matrix operations and then use some Java statements / features that will the display statement processing times of the program.

Your program is to perform matrix addition for two user - input arrays and then monitor the speed of execution of the addition process.

Modify the Program:

Modify the starter code by placing some program statements that will assist in monitoring execution speeds of the matrix operation(s). This will enable us to evaluate the performance of the operation of the program.

To perform this modification, you can use variables such as those shown below and place them at appropriate locations in the program to monitor program segment execution times.

 

long preTime = System.currentTimeMillis();   long postTime = System.currentTimeMillis();

 

Code for assignment:

import java.util.Scanner;     public class Add_Matrices   {        Scanner scan;        int matrix1[][], matrix2[][], sum[][];        int row, column;     void create() {                      scan = new Scanner(System.in);                      System.out.println("Matrix Addition");                      // the first matrix is created          System.out.println("\nEnter number of rows & columns");        row = Integer.parseInt(scan.nextLine());        column = Integer.parseInt(scan.nextLine());                      matrix1 = new int[row][column];        matrix2 = new int[row][column];        sum = new int[row][column];           System.out.println("enter the data for first matrix :");           for(int i = 0; i < row; i++)         {          for(int j = 0; j < column; j++)           {            matrix1[i][j] = scan.nextInt();          }        }                      // the second matrix is created          System.out.println("enter the data for second matrix :");                 for(int i = 0; i < row; i++) {                                        for(int j = 0; j < column; j++) {                                                    matrix2[i][j] = scan.nextInt();                    }              }        }    void display() {                        System.out.println("\nThe First Matrix is :");                            for(int i = 0; i < row; i++) {                                        for(int j = 0; j < column; j++) {                                                    System.out.print("\t" + matrix1[i][j]);                    }                    System.out.println();              }                            System.out.println("\n\nThe Second Matrix is :");                            for(int i = 0; i < row; i++) {                                        for(int j = 0; j < column; j++) {                                                    System.out.print("\t" + matrix2[i][j]);                    }                    System.out.println();              }        }            void add() {                            for(int i = 0; i < row; i++) {                                        for(int j = 0; j < column; j++) {                                                    sum[i][j] = matrix1[i][j] + matrix2[i][j];                    }              }                            System.out.println("\n\nThe Sum is :");                            for(int i = 0; i < row; i++) {                                        for(int j = 0; j < column; j++) {                                                    System.out.print("\t" + sum[i][j]);                    }                    System.out.println();              }        }  }    class MainClass {  public static void main(String args[])   {              // a class object is created               Add_Matrices obj = new Add_Matrices();              // the class object performs a sequence of actions                obj.create();              obj.display();              obj.add();        }  }

Here is a sample of the add matrices application, prior to the code modification.

Enter number of rows & columns

2

3

enter the data for first matrix :

-2 0 9

7 5 1

enter the data for second matrix :

2 7 0

6 4 5

The First Matrix is :

-2 0 9

7 5 1

The Second Matrix is :

2 7 0

6 4 5

The Sum is :

0 7 9

13 9 6