What is the difference between Serializalble and Externalizable interface?

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Serializable is a marker interface but Externalizable is not a marker interface.When you use Serializable interface, your class is serialized automatically by default. But you can override writeObject() and readObject() two methods to control more complex object serailization process. When you use Externalizable interface, you have a complete control over your class's serialization process.

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What is the difference between Serializalble and Externalizable interface?

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