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  1. #1
    letdoit is offline Member
    Join Date
    Feb 2011
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    Default Class Inheritance Cast

    If I have:
    1. Account a = api.getAccount();
    2. AccountX extends Account;

    Then I do:
    AccountX x = (AccountX) api.getAccount();

    I got runtime class cast exception. Could you explain why?

  2. #2
    pbrockway2 is offline Moderator
    Join Date
    Feb 2009
    New Zealand
    Rep Power


    You get a runtime ClassCastException whenever you try and cast something whose runtime type is not what you are casting to (or a subtype of what you are casting to). In your case api.getAccount() returned something that was not an instance of AccountX.

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