関連ワード:  java variable used in lambda should be final    java variable used in lambda expression should be final or effectively final    java variable used in lambda should be final or effectively final    java variable in lambda should be final    java stream variable used in lambda expression should be final or effectively final    java foreach variable used in lambda expression should be final or effectively final    variable used in lambda expression should be final or effectively final java 8  
結果 : java variable used in lambda should be final