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how can be retrieve from any collection into our own order?
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Rahul Noel
Ranch Hand
Joined: Jul 18, 2008
Posts: 51
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Hi,
How can be retrieve elements from HashMap,TreeSet,TreeMap,Hashtable... into our own order like reverse or ascending?
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Thanks in Advance.
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Paul Sturrock
Bartender
Joined: Apr 14, 2004
Posts: 10336
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Use a Comparator, or make your objects Comparable, then you can sort your collection using whatever logic you like.
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JavaRanch FAQ HowToAskQuestionsOnJavaRanch
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Rob Spoor
Sheriff
Joined: Oct 27, 2005
Posts: 19216
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That will only work for TreeMap and TreeSet. HashMap, HashSet and Hashtable are not meant to be ordered.
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SCJP 1.4 - SCJP 6 - SCWCD 5
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subject: how can be retrieve from any collection into our own order?
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