関連ワード:  why should i use interface in java    why do we use 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    why do we need to use interface in java    what is the point of interfaces in java    why we use interface in java  
結果 : why should i use interface in java