java - Compilation effects of declaring method parameters "final" -
this question has answer here: is there performance reason declare method parameters final in java? 8 answers marking method parameter final needed allow variable access inner anonymous classes , useful coding-tool enforcing variable use conventions within method. apart that, there other compilation-related motivation use final -keyword? specifically, give compiler hints facilitate specific optimization otherwise not performed? or compiler smart enough recognize if variable never modified anyways? for example, i'm thinking whether there difference how variables passed method. e.g. variable of primitive type (int, byte, etc.) needs copied when passed method prevent modifications trickle out calling code, whereas if parameter marked final , "passed reference" without such concerns, i.e. no copy-operation needed. but let's keep question more gen...