Java Code to Perform Matrix Multiplication

In Java, matrix multiplication can be accomplished using the binary “*” operator along with an additional loop. A matrix also referred to as an array of arrays, allows for various operations such as addition, subtraction, and multiplication.

During matrix multiplication, each element of a row in the first matrix is multiplied by all the corresponding elements in the columns of the second matrix.

Java Code to Perform Matrix Multiplication

public class MatrixMultiplicationExample{  
public static void main(String args[]){  
//creating two matrices    
int a[][]={{1,1,1},{2,2,2},{3,3,3}};    
int b[][]={{1,1,1},{2,2,2},{3,3,3}};    
    
//creating another matrix to store the multiplication of two matrices    
int c[][]=new int[3][3];  //3 rows and 3 columns  
    
//multiplying and printing multiplication of 2 matrices    
for(int i=0;i<3;i++){    
for(int j=0;j<3;j++){    
c[i][j]=0;      
for(int k=0;k<3;k++)      
{      
c[i][j]+=a[i][k]*b[k][j];      
}//end of k loop  
System.out.print(c[i][j]+" ");  //printing matrix element  
}//end of j loop  
System.out.println();//new line    
}    
}}

Output:

6 6 6 
12 12 12 
18 18 18