public void run() {
        MatrixWithExtendedInput m;
        try{
            m = new MatrixWithExtendedInput(3,4);
        } catch(Matrix.MatrixError e) {
            System.out.println("Matrix dimensions set badly.");
            return;
        }
        m.setMatrix("2,1,1;33,777777,8888888;444,1,1;5555,1,-10");
        m.prettyPrint();
    }