Category: Basics

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Serialization

A Java Class Object needs to serialized if we need to store or transfer with the state values. For any IO operations or network...

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Hashtable

Hashtable is an implementation for storing/processing list of objects using a hashkey and buckets. Hashtable has default load capacity of 11, where it will...

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Polymorphism

1. Overview Polymorphism refers to different behavior of an object for same method name in Object Oriented Programming. Every child class can have different...

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Abstraction

Abstraction is a concept in Object oriented programming where only required behavior and property will be shown/visible to the user/application. In Java, data abstraction...

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Inheritance what?&why?

Inheritance is an important feature where a class can be extended and reused by another class. A inherited class can be called as subclass...

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String vs StringBuffer

String is a final class hence cannot be extended by any class. Any class which cannot be extended can also be called as immutable...

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Classes & Objects

Java is a object Oriented Programming language. Programming deals with defining objects states and behaviors. In Java, Objects are logical representation of a real...