How to sort a Set
posted 10 years ago
The short answer, is "you can't". A Set is not an ordered Collection.
A longer, and hopefully more useful, answer is that there are a variety of ways that you can get a sorted version of the information that is in a Set.
You could do toArray() on the Set, then Arrays.sort().
You could switch from a Set to a SortedSet such as TreeSet.
You could switch from a Set to a List like ArrayList and use Collections.sort().
There are a variety of reasons for choosing different options. For example, if you need the no-duplicates feature of a Set, then ArrayList is no good.
[ November 01, 2007: Message edited by: Peter Chase ]
A longer, and hopefully more useful, answer is that there are a variety of ways that you can get a sorted version of the information that is in a Set.
You could do toArray() on the Set, then Arrays.sort().
You could switch from a Set to a SortedSet such as TreeSet.
You could switch from a Set to a List like ArrayList and use Collections.sort().
There are a variety of reasons for choosing different options. For example, if you need the no-duplicates feature of a Set, then ArrayList is no good.
[ November 01, 2007: Message edited by: Peter Chase ]
Betty Rubble? Well, I would go with Betty... but I'd be thinking of Wilma.
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