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Thread: SIMPLE PROGRAMING PROBLEMS help!!

  1. #26
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    Default Re: SIMPLE PROGRAMING PROBLEMS help!!

    True, but when you think about it &, |, &, and ~ (Does Java have bitwise-not?) is designed for numbers, not Booleans. A SIDE EFFECT of booleans being bytes makes it work on booleans like you would expect. So maybe we're both right? maybe it's not strictly both, if that makes sense?

  2. #27
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    Default Re: SIMPLE PROGRAMING PROBLEMS help!!

    It is not (that's not) a Side Effect from the point of view of the Java language author and maintainers. It is defined behavior, as shown in the Java Language Specification. (My reference was from the Third Edition. If you are interested, you can download the edition appropriate for your version of Java here: Java SE Specifications)

    Here are the facts, as documented in the JLS:

    Integer Bitwise operators &, ^, and | were designed for operands that can be converted to primitive integer data types.
    Boolean Logical Operators &, ^, and | were designed for boolean (and Boolean) operands.

    If you don't want to use the boolean logical operators, '&' '^' and '|' that's OK. I mean, nobody will try to make you use something that you don't like, but they are part of the language. Deterministic behavior is defined and guaranteed. (Note that neither the JLS nor I said anything about a boolean '~' operator. There is no such thing defined for the Java language.)



    Cheers!

    Z
    Last edited by Zaphod_b; October 17th, 2012 at 01:17 PM.

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