public InputStream openClassfile(String classname){
  try {
    URLConnection con=openClassfile0(classname);
    if (con != null)     return con.getInputStream();
  }
 catch (  IOException e) {
  }
  return null;
}

public InputStream openClassfile ( String classname ) { try { URLConnection con = openClassfile0 ( classname ) ; if ( con != null ) return con . getInputStream ( ) ; } catch ( IOException e ) { } return null ; }
opens a class file with http .
