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Java Serialization Magic Methods And Their Uses With Example

posted by Naresh Joshion August 30, 2019

In a previous article Everything You Need to Know About Java Serialization, we discussed how serializability of a class is enabled by implementing the Serializable interface. If our class does not implement Serializable interface or if it is having a reference to a non Serializable class then JVM will throw NotSerializableException.

All subtypes of a serializable class are themselves serializable and Externalizable interface also extends Serializable. So even if we customize our serialization process using Externalizable our class is still a Serializable.

The Serializable interface is [.....]

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How To Deep Clone An Object Using Java In Memory Serialization

posted by Naresh Joshion August 18, 2019

In my previous articles, I had explained the difference between deep and shallow cloning and how copy-constructors and defensive copy methods are better than default java cloning.

Java object cloning using copy constructors and defensive copy methods certainly have some advantages but we have to explicitly write some code to achieve deep cloning in all these approaches. And still, there are chances that we might miss something and do not get deeply cloned object.

And as discussed in 5 different ways to create objects in java, [.....]

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How to Customize Serialization In Java By Using Externalizable Interface

posted by Naresh Joshion August 11, 2019

In a previous article Everything About Java Serialization Explained With Example, I explained how we can serialize/deserialize one object using Serializable interface and also explain how we can customise the serialization process using writeObject and readObject methods.

Disadvantages Of Java Serialization Process But these customizations are not sufficient because JVM has full control of the serialization process and those customization logics are just additions to the default serialization process. We still have to use the default serialization logic by calling ObjectOutputStream.defaultWriteObject() and ObjectInputStream.defaultReadObject() from writeObject and readObject [.....]

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What is Serialization? Everything You Need to Know About Java Serialization Explained With Example

posted by Naresh Joshion August 10, 2019

In a previous article, we looked at 5 different ways to create objects in java, I have explained how deserialising a serialised object creates a new object and in this blog, I am going to discuss Serialization and Deserialization in details.

We will use below Employee class object as an example for the explanation

// If we use Serializable interface, static and transient variables do not get serialize class Employee implements Serializable { // This serialVersionUID field is necessary for Serializable as well as Externalizable to provide version control, // Compiler will provide this field if we do not provide it which might change if we modify the class structure of our class, and we will [.....]

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How to Install Multiple Versions of Java on the Same Machine

posted by Naresh Joshion March 29, 2019

Some time back I have written one article Java Lambda Expression Explained with Example but it was easy for me to explore and Java 8 because I was using it in my project and I was allowed to install and use it. But in my current project, we are still using Java 8 and now I want to upgrade myself and learn Java 11 but can not install it.

And this happens with a lot of Java developers, Sometimes you want to learn and explore the latest [.....]

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Useful Git Commands

posted by Naresh Joshion January 24, 2019

Git is a most widely used and powerful version control system for tracking changes in computer files and coordinating work on those files among multiple people. It is primarily used for source code management in software development, but it can be used to keep track of changes in any set of files.

Git was developed by Linus Torvalds in 2005 as a distributed open-source software version control software and of course, it is free to use. As a distributed revision control system it is aimed at [.....]

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