Stage 1/6: Addition - Matrix

package processor;

import java.util.Scanner;

public class Matrix {
    Scanner scanner = new Scanner(System.in);
    int[][] matrix;
    int rows;
    int columns;

    public Matrix(int n, int m) {
        this.matrix = new int[n][m];
        this.rows = n;
        this.columns = m;
    }

    /**
     * This method will read int values from System.in to initialise matrix class attribute.
     */
    public void readMatrix() {
        for (int i = 0; i < this.rows; ++i) {
            for (int j = 0; j < this.columns; ++j) {
                this.matrix[i][j] = scanner.nextInt();
            }
        }
    }

    /**
     * Take a matrix and adds it to its own matrix class attribute.
     * @param matrixToAdd The matrix to be added to its own matrix class attribute.
     * @return addedMatrix The sum of matrixToAdd and own matrix class attribute.
     */
    public Matrix addMatrix(Matrix matrixToAdd) {
        Matrix addedMatrix = new Matrix(this.rows, this.columns);
        for (int n = 0; n < this.rows; n++) {
            for (int m = 0; m < this.columns; m++) {
                addedMatrix.matrix[n][m] = this.matrix[n][m] + matrixToAdd.matrix[n][m];
            }
        }
        return addedMatrix;
    }

    /**
     * Outputs matrix class attribute on System.out, space delimited.
     */
    public void printMatrix() {
        for (int n = 0; n < this.rows; n++) {
            for (int m = 0; m < this.columns; m++) {
                System.out.print(this.matrix[n][m] + " ");
            }
            System.out.println();
        }
    }
}