code: public URL getResource( String path ) {
          URL url = null;
          if ( externalClassLoader != null )
              // classloader wants no leading slash
              url = externalClassLoader.getResource( path.substring(1) );
          if ( url == null )
              return Interpreter.class.getResource( path );
  
          return url;
      }
docs: Get a resource URL using the BeanShell classpath
  @param path should be an absolute path