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Thread: generic types

  1. #1
    jon80's Avatar
    jon80 is offline Senior Member
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    Post generic types

    If you need to collect parameterized type objects, simply
    use an ArrayList e.g. ArrayList<Pair<String> is safe and effective.
    1. Can I use other collections e.g. Hashtable?

    2. Are all collections sub-classes implementing java.util.Collection?

  2. #2
    masijade is offline Senior Member
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    Yes, you can use Generics on other collections.

    Most, if not all (although I believe all are, I just haven't checked the docu on every possible collection type to make sure, nudge, nudge, wink, wink).

    See Lesson: Generics (The Java™ Tutorials > Bonus).

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    sure...it was just a question

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    masijade is offline Senior Member
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    What?

    You're not upset with a little genial ribbing (the API docs hint), are you?

    And what is wrong with providing you a resource that will let you investigate the subject area in a little more depth?

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    A little bit of aggressive diving into the Java API and the Sun tutorials is just what the doctor orders for these type of problems. It's a spot-on answer.

  6. #6
    jon80's Avatar
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    lol not really. I've been through the tutorial, but even though I read it I thought it lacked concreteness; or maybe it's too high level for a common mortal :)

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    masijade is offline Senior Member
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