Matrix In Java

Matrix.java

public class Matrix {
    private int[][] data;
    private int rows;
    private int cols;

    public Matrix(int rows, int cols) {
        this.rows = rows;
        this.cols = cols;
        this.data = new int[rows][cols];
    }

    public int get(int row, int col) {
        return this.data[row][col];
    }

    public void set(int row, int col, int value) {
        this.data[row][col] = value;
    }

    public int getRows() {
        return this.rows;
    }

    public int getCols() {
        return this.cols;
    }

    public void print() {
        for (int i = 0; i < this.rows; i++) {
            for (int j = 0; j < this.cols; j++) {
                System.out.print(this.data[i][j] + " ");
            }
            System.out.println();
        }
    }

    public static void main(String[] args) {
        Matrix matrix = new Matrix(3, 3);
        matrix.set(0, 0, 1);
        matrix.set(0, 1, 2);
        matrix.set(0, 2, 3);
        matrix.set(1, 0, 4);
        matrix.set(1, 1, 5);
        matrix.set(1, 2, 6);
        matrix.set(2, 0, 7);
        matrix.set(2, 1, 8);
        matrix.set(2, 2, 9);

        matrix.print();
    }
}