---
title: "What is Externalizable interface?"  
description: "What is Externalizable interface?"  
author: "Sumit Kesarwani"  
published: 2014-08-25  
updated: 2020-09-22  
canonical: https://www.mindstick.com/interview/2009/what-is-externalizable-interface  
category: "java"  
tags: ["java"]  
reading_time: 1 minute  

---

# What is Externalizable interface?

Externalizable is an interface which contains two methods readExternal and writeExternal. These methods give you a control over the serialization mechanism.

Thus if your class implements this interface, you can customize the serialization process by implementing these methods.

## Answers

### Answer by Sumit Kesarwani

Externalizable is an interface which contains two methods readExternal and writeExternal. These methods give you a control over the serialization mechanism.

Thus if your class implements this interface, you can customize the serialization process by implementing these methods.


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Original Source: https://www.mindstick.com/interview/2009/what-is-externalizable-interface

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