関連ワード:  why do we need serialization in java    why do we use serialization in java    why do we need serialization and deserialization in java    why do we need to implement serializable in java    why do we use serializable interface in java    why do we need to serialize objects in java    why should we use serializable in java    what is serialization in java and why it is used    why serialization is required in java    why we need to serialize the object in java