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Showing posts with label core java get started. Show all posts
Showing posts with label core java get started. Show all posts

wrapper classes in Java

Java wrapper classes 1. What's need of wrapper classes? ---1. to be able to add prim types to growable collection(growable data st...
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String class API Java

String class API Important String class constructors 1.String(byte[] bytes) --- byte[] ----> String converter 2.String(char[] cha...
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What does it mean for a subclass-outside-the-package to have access to a superclass (parent) protected member?

What does it mean for a subclass-outside-the-package to have access to a superclass (parent) protected member? It means the subclass inhe...
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Java Interfaces Simplified

Java Interfaces Why we need  Java Interfaces ? 1. As an alternative to multiple inheritance. 2. Allows complete loosely coupled archit...
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JAVA Polymorphism Simplified:

Polymorphism in Java : Defination of Polymorphism: one functionality with multiple (changing) forms , static & compile time with ear...
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Java Inheritance Simplified

Inheritance in Java: In OOP, we often organize classes in hierarchy to avoid duplication and reduce redundancy. The classes in the lower ...
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