関連ワード:  how to make class generic in java    how to create generic class in java    how to get class type of generic in java    how to create custom generic class in java    how to get generic class java    how to create object of generic class in java    how to create constructor for generic class in java    how to create instance of generic class in java    how to create generic class and generic method in java    how to get class object for generic type in java