関連ワード:  java local variable 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 a lambda expression must be final or effectively final    java local variables referenced from an inner class must be final or effectively final    java local variable result defined in an enclosing scope must be final or effectively final    java local variable is required to be final or effectively final based on its usage    java stream local variable defined in an enclosing scope must be final or effectively final    java lambda local variable defined in an enclosing scope must be final or effectively final    java foreach local variable defined in an enclosing scope must be final or effectively final    java error local variable defined in an enclosing scope must be final or effectively final  
結果 : java local variable must be final or effectively final