蚂蚁小窝

我也经常用 object[] list.toArray(),但大师随手几行代码就让人受益。
出处：http://martinfowler.com/articles/injection.html

class MovieLister...
public Movie[] moviesDirectedBy(String arg) {
List allMovies = finder.findAll();
for (Iterator it = allMovies.iterator(); it.hasNext();) {
Movie movie = (Movie) it.next();
if (!movie.getDirector().equals(arg)) it.remove();
}
return (Movie[]) allMovies.toArray(new Movie[allMovies.size()]);
}