Package java.io

Interface Externalizable

Object serialization uses the Serializable and Externalizable interfaces. The writeExternal and readExternal methods of the Externalizable interface are implemented by a class to give the class complete control over the format and contents of the stream for an object and its supertypes. Each object to be stored is tested for the Externalizable interface. If the object supports Externalizable, the writeExternal method is called. If the object does not support Externalizable and does implement Serializable, the object is saved using ObjectOutputStream. When an Externalizable object is reconstructed, an instance is created using the public no-arg constructor, then the readExternal method called.

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Public Methods