code: public JavaClass parse(InputStream is)
      throws IOException
    {
      _is = is;
  
      if (_loader == null)
        _loader = new JavaClassLoader();
      
      if (_class == null)
        _class = new JavaClass(_loader);
  
      _cp = _class.getConstantPool();
      
      parseClass();
  
      return _class;
    }
docs: Parses the .class file.