///////    TestMatrix.java    ///////
package matrix;

class TestMatrix
{
    public static void main(String[] args)
           throws ClassNotFoundException
    {   double[][] a = { {1.0,-2.0,1.5}, {1.0,2.4,3.1}};
        double[][] b = { {9.0,0.7},{-2.0,30.5},{-9.0,4.0}};
        double[][] c = { {9.0,0.7},{-2.0,30.5}};
        Matrix m1 = new Matrix(a);
        Matrix m2 = new Matrix(b);
        Matrix m3 = new Matrix(c);
        try { Matrix prod = m1.times(m2);
              System.out.println(prod);
              prod = m1.times(m3);
            }
            catch(MatrixException e)
            { handle(e); System.exit(1); }
    }

    private static void handle(MatrixException e)
          throws ClassNotFoundException
    {   if ( e instanceof SingularException ) 
        {  System.err.println("S:" + e.getMessage()); }
        else if ( e instanceof IncompatibleDimException ) 
        {  System.err.println("D:"+ e.getMessage()); }
        else if ( e instanceof InvalidIndexException ) 
        {  System.err.println("I:"+ e.getMessage()); }
    }
}