code: public static void releaseMemoryURL(final URL u) {
  		try {
  			final Class c = ClassLoader.getSystemClassLoader().loadClass(
  					"org.allcolor.yahp.converter.CMemoryURLHandler");
  			final Method m = c.getDeclaredMethod("releaseMemoryURL",
  					new Class[] { URL.class });
  			m.setAccessible(true);
  			m.invoke(null, new Object[] { u });
  		} catch (final Exception ignore) {
  			ignore.printStackTrace();
  		}
  	}
docs: Release a previously allocated memory URL
  
  @param u
  the URL to release memory