According to J2SE 5.0, I haven't seen J2SE 5.0, and it doesn't matter to remove the corner brackets (except Enumset and Enummap): http://www.caterpillar.onlyfun.net/pmwiki/ PMWiki.php / Languagetech / Javagossip2 also has a pair of containers, and table comparisons: http://blog.9cbs.net/duoshanx/archive/2004/09/09/99709.aspx
