# Sum of Matrix Elements in Java

Program description:- Write a Java program to find the sum of matrix elements. Take a matrix, use a method to find the sum, and display the result.

Example:-
Matrix =
1 2 3
4 5 6
7 8 9
Sum of matrix elements = 45

Before solving this problem, you should have knowledge of how to declare and initialize a matrix in Java, how to take input for a matrix from the end-user, and what are the different ways to display it. How to find the length or size of a matrix in Java? How to pass and return a matrix in Java. See:- Matrix in Java

Procedure to find the sum of matrix elements,
a) Take a matrix.
b) Declare a sum variable and initialize it with 0.
c) Traverse through the matrix.
d) Access each element of the matrix and add it to the sum variable.
e) Display the sum value.

## Java Program to Find the Sum of Matrix Elements

```public class Matrix {

// main method
public static void main(String[] args) {

// declare and initialize matrix
int a[][] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };

// find sum of matrix elements
int sum = matrixSum(a);

// display result
System.out.println("The sum of matrix elements = " + sum);
}

// method to find sum of matrix elements
public static int matrixSum(int[][] a) {

// variable to store sum
int sum = 0;

// traverse through the matrix
for (int[] row : a) {
for (int element : row) {
sum += element;
}
}

// return sum value
return sum;
}
}```

Output:-

The sum of matrix elements = 45

See more matrix programs in Java:-

Also See:-

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