rossGardiner

public class Matrix
{
  private int rows;
  private int columns;
  private double[][]theMatrix;
  /**
   * Constructor for class Matrix
   * @param setRows
   * @param setColumns 
   */

rossGardiner

public class SquareMatrix extends Matrix
{
    private int order;
    
    /**
     * constructor for class SquareMatrix
     * @param n 
     */
    public SquareMatrix(int n)
    {

rossGardiner

public class TwoByTwoMatrix extends SquareMatrix
{
    private static final double[][] IDENTITY_MATRIX = {{1,0}, {0,1}};
    
    /**
     * constructor for the class TwoByTwoMatrix
     */
    public TwoByTwoMatrix()
    {
        super(2);

rossGardiner

public class ThreeByThreeMatrix extends SquareMatrix
{
    private static final double[][] IDENTITY_MATRIX = {{1,0,0},{0,1,0},{0,0,1}};
    
    /**
     * constructor for class ThreeByThreeMatrix
     */
    public ThreeByThreeMatrix()
    {
        super(3);