code: public final Transform getInverse() throws GeometryException
      {
          if (Math.abs(m_jso.getDeterminant()) <= Double.MIN_VALUE)
          {
              throw new GeometryException("Can't invert this matrix - determinant is near 0");
          }
          return new Transform(m_jso.getInverse());
      }
docs: Returns the inverse transform Tx' of this transform Tx, which
  maps coordinates transformed by Tx back
  to their original coordinates.
  In other words, Tx'(Tx(p)) = p = Tx(Tx'(p)).
  <p>
  If this transform maps all coordinates onto a point or a line
  then it will not have an inverse, since coordinates that do
  not lie on the destination point or line will not have an inverse
  mapping.
  The <code>getDeterminant</code> method can be used to determine if this
  transform has no inverse, in which case an exception will be
  thrown if the <code>invert</code> method is called.
  @see #getDeterminant
  @exception GeometryException if the matrix cannot be inverted.
  @return a new Transform