関連ワード:  is abstract cannot be instantiated java    is abstract cannot be instantiated java interface    list is abstract cannot be instantiated java    queue is abstract cannot be instantiated java    java class is abstract cannot be instantiated    java map is abstract cannot be instantiated    java set is abstract cannot be instantiated    java pair is abstract cannot be instantiated    java util list is abstract cannot be instantiated    java util map is abstract cannot be instantiated  
結果 : is abstract cannot be instantiated java