Java program to add two matrices

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mahmoud2506

2022-05-06

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Adding Two Matrices using Java program

Program:

//Java program to add two matrices.
 
import java.util.*;
 
public class AddMatrices
{
    public static void main(String args[])
    {
        int row,col;
         
        Scanner sc=new Scanner(System.in);
         
        //Read number of rows and cols
        System.out.print("Input number of rows: ");
        row=sc.nextInt();
        System.out.print("Input number of rows: ");
        col=sc.nextInt();
         
        //declare two dimensional array (matrices)
        int a[][]=new int[row][col];    //for matrix 1
        int b[][]=new int[row][col];    //for matrix 2
        int c[][]=new int[row][col];    //for matrix 3
         
        //Read elements of Matrix a
        System.out.println("Enter elements of matrix a:");
        for(int i=0; i<row; i++)
        {
            for(int j=0; j<col; j++)
            {
                System.out.print("Element [" + (i+1) + "," + (j+1) + "] ? ");
                a[i][j]=sc.nextInt();
            }
        }
        //Read elements of Matrix b
        System.out.println("Enter elements of matrix b:");
        for(int i=0; i<row; i++)
        {
            for(int j=0; j<col; j++)
            {
                System.out.print("Element [" + (i+1) + "," + (j+1) + "] ? ");
                b[i][j]=sc.nextInt();
            }
        }
         
         
        //print matrix a
        System.out.println("Matrix a:");
        for(int i=0; i<row; i++){
            for(int j=0; j<col; j++){
                System.out.print(a[i][j] + "\t");
            }
            System.out.print("\n");
        }
         
        //print matrix b
        System.out.println("Matrix b:");
        for(int i=0; i<row; i++){
            for(int j=0; j<col; j++){
                System.out.print(b[i][j] + "\t");
            }
            System.out.print("\n"); 
        }
         
        //adding matrices
        for(int i=0; i<row; i++){
            for(int j=0; j<col; j++){
                c[i][j]=a[i][j];
            }
        }
         
        //print matrix b
        System.out.println(":: Final Matrix:");
        for(int i=0; i<row; i++){
            for(int j=0; j<col; j++){
                System.out.print(c[i][j] + "\t");
            }
            System.out.print("\n"); 
        }
         
    }   
}

Output

    me@linux:~$ javac AddMatrices.java 
    me@linux:~$ java AddMatrices 

    Input number of rows: 2
    Input number of rows: 3
    Enter elements of matrix a:
    Element [1,1] ? 1
    Element [1,2] ? 2
    Element [1,3] ? 3
    Element [2,1] ? 4
    Element [2,2] ? 5
    Element [2,3] ? 6
    Enter elements of matrix b:
    Element [1,1] ? 7
    Element [1,2] ? 6
    Element [1,3] ? 5
    Element [2,1] ? 7
    Element [2,2] ? 8
    Element [2,3] ? 5
    Matrix a:
    1	2	3	
    4	5	6	
    Matrix b:
    7	6	5	
    7	8	5	
    :: Final Matrix:
    1	2	3	
    4	5	6

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Java program to add two matrices

Java program to add two matrices

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Adding Two Matrices using Java program

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