question: private void collectWrapperClasses ( ClassLoader cl , String pkg , File file ) throws Exception { for ( File f : file . listFiles ( ) ) { if ( f . isDirectory ( ) ) { collectWrapperClasses ( cl , pkg + f . getName ( ) + "." , f ) ; } else { addWrapperClassToWrapperClassesList ( cl , pkg , f ) ; } } }
target:  Walk package tree for collecting wrapper classes.