> From: news [mailto:[EMAIL PROTECTED] On Behalf Of Leo Simons
>
> +1. That's what the collection APIs do, innit?
Not really:
Set set = new HashSet ();
assertTrue( !set.contains(null) );
set.add( null );
assertTrue( set.contains(null) );
Map map = new HashMap ();
assertTrue( !map.containsKey(null) );
assertTrue( map.get(null) == null );
map.put( null, null );
assertTrue( map.containsKey(null) );
assertTrue( map.get(null) == null );
get() will still give you null, but containsKey will return true.
/LS
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