What is the difference between Serializable and Externalizable interface?
Solution:
| No. | Serializable | Externalizable |
|---|---|---|
| 1) | The Serializable interface does not have any method, i.e., it is a marker interface. | The Externalizable interface contains is not a marker interface, It contains two methods, i.e., writeExternal() and readExternal(). |
| 2) | It is used to "mark" Java classes so that objects of these classes may get the certain capability. | The Externalizable interface provides control of the serialization logic to the programmer. |
| 3) | It is easy to implement but has the higher performance cost. | It is used to perform the serialization and often result in better performance. |
| 4) | No class constructor is called in serialization. | We must call a public default constructor while using this interface. |
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