関連ワード:  java must be final or effectively final    java variable must be final or effectively final    java local variable must be final or effectively final    java enclosing scope must be final or effectively final    defined in an enclosing scope must be final or effectively final java    java variable used in lambda should be final or effectively final    java local variables referenced from a lambda expression must be final or effectively final    java local variable defined in an enclosing scope must be final or effectively final    java local variables referenced from an inner class must be final or effectively final    java error local variables referenced from a lambda expression must be final or effectively final  
結果 : java must be final or effectively final