Freya.no » conversion http://wp.freya.no Knowledge is power Sat, 04 Sep 2010 21:00:31 +0000 en hourly 1 Java conversions and 7 Golden rules of widening, boxing & varargs http://wp.freya.no/java/java-conversions-and-golden-rules-of-widening-boxing-varargs/ http://wp.freya.no/java/java-conversions-and-golden-rules-of-widening-boxing-varargs/#comments Tue, 16 Feb 2010 19:31:43 +0000 Tatyana http://wp.freya.no/?p=510
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    • ]]>     Here is a very useful java conversion table that I’ve created while preparing for the Sun Certified Java Programmer exam.

    primitives conversion

    Java primitive conversions table

    And here is a complete overview of the Golden rules of widening, boxing & varargs:

    1. Primitive Widening > Boxing > Varargs.
    2. Widening and Boxing (WB) not allowed.
    3. Boxing and Widening (BW) allowed.
    4. While overloading Widening + vararg and boxing + vararg are mutually exclusive of each other.
    5. Widening between wrapper classes not allowed
    6. Widening+varArgs & Boxing+varargs are individually allowed (but not allowed in overloaded version of method)
    7. Boxing+Widening is preferred over Boxing+Varargs.

    More explanation here.

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