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  1. 01-07-2011, 06:45 PM #1
    nn12
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    Default sorting objects in java

    Hi is it possible to sort objects in java by a particular attibute. For eg. I have several 'user' objects which have an attribute say empno which is a numeric. Is it possible to sort all the user objects in ascending order by emp no. If yes, then how,

    Thanks
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  2. 01-07-2011, 06:52 PM #2
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    KevinWorkman
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    What have you tried? How are the Objects stored? In a List? In an array? As separate variables?

    You could write a sorting method yourself. Or you could implement Comparable. Or you could set up a Comparator. Google and the API are your friends.
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  3. 01-07-2011, 07:36 PM #3
    user0
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    I agree with Kevin. You should read up on how to implement the Comparable interface in your class. Please see link to API for Comparable: Comparable (Java 2 Platform SE v1.4.2)

    Best,
    --user0--
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  4. 01-08-2011, 09:18 AM #4
    nn12
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    thanks! the objects are stored in a arraylist.
    Last edited by nn12; 01-08-2011 at 10:44 AM.
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