Final (Java): Difference between revisions

Revision as of 21:14, 20 July 2008

Revision as of 09:18, 31 July 2008

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= Final variables =

A '''final [[variable]]''' is [[Immutable object|immutable]]; it can only be assigned to once. If the variable is a field of a class, it must be assigned to in the constructor of its class. (Note: If the variable is a reference, this means that the variable cannot be re-bound to reference another object. But the object that it references is still mutable, if it was originally mutable.)

Unlike the value of a [[constant (computer science)|constant]], the value of a final variable is not necessarily known at compile time.