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assignment conversion

Karel KoboojBot
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Joined: Apr 09, 2004
Posts: 35
according to the JLS (p. 66) I think the following block of code should be allowed

but my IDE (Eclipse) reports this as an error. Did I make a wrong interpretation of the JLS or is the Eclipse IDE a bit too restrictive in this case ?
Corey McGlone
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Joined: Dec 20, 2001
Posts: 3271
This is an error. You can not implicitly cast a short (2 bytes) to a byte (1 byte).
However, if the value you are assigning is a constant (and therefore known at compile time), the assignment is allowed, as long as the value fits into the destination type.
Try making your short final - that will make it a compile-time constant and I believe your code will work.

SCJP Tipline, etc.
Karel KoboojBot
Ranch Hand

Joined: Apr 09, 2004
Posts: 35
Thanks, after reading the JLS section again it states clearly that the expression should be constant. Making it final does indeed work.
It is sorta covered in the JavaRanch Style Guide.
subject: assignment conversion