関連ワード:  how to make a generic class in java    how to create a generic class in java    how to make a generic type in java    how to create custom generic class in java    how to create a generic type array in java    how to get the class of a generic type in java    how to create object of generic class in java    how to create constructor for generic class in java    how to make return type generic in java    how to get generic class java