question: public static Vector < String > find ( Class < ? > cls , String [ ] pkgnames ) { Vector < String > result ; int i ; HashSet < String > names ; result = new Vector < String > ( ) ; names = new HashSet < String > ( ) ; for ( i = 0 ; i < pkgnames . length ; i ++ ) { names . addAll ( find ( cls , pkgnames [ i ] ) ) ; } result . addAll ( names ) ; Collections . sort ( result , new StringCompare ( ) ) ; return result ; }
target:  Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.