Finding the entrywise product of two matrices.

Here’s a Java program that calculates the entrywise product of two matrices:

   public class MatrixEntrywiseProduct {

    public static void main(String[] args) {

        int[][] matrix1 = {

            {1, 2, 3},

            {4, 5, 6},

            {7, 8, 9}

        };

        int[][] matrix2 = {

            {9, 8, 7},

            {6, 5, 4},

            {3, 2, 1}

        };

        int rows = matrix1.length;

        int columns = matrix1[0].length;

        int[][] result = new int[rows][columns];

        // Calculate entrywise product

        for (int i = 0; i < rows; i++) {

            for (int j = 0; j < columns; j++) {

                result[i][j] = matrix1[i][j] * matrix2[i][j];

            }

        }

        // Print the result

        System.out.println("Entrywise Product:");

        for (int i = 0; i < rows; i++) {

            for (int j = 0; j < columns; j++) {

                System.out.print(result[i][j] + " ");

            }

            System.out.println();
     }

    }
}

In this example, we have two matrices `matrix1` and `matrix2`, both with dimensions 3×3. The program calculates the entrywise product of these two matrices and stores the result in the `result` matrix. Finally, it prints the resulting matrix.

You can modify the values of `matrix1` and `matrix2` to test the program with different matrices of the same dimensions.