関連ワード:  why would you use an interface in java    why should i use an interface in java    why do we need an interface in java    why do we use functional interface in java    why do we use marker interface in java    why do we use runnable interface in java    why do we use serializable interface in java    when should you use an interface in java    why do we need functional interface in java    why do we need functional interface in java 8  
結果 : why would you use an interface in java