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Category Archives: Core Java Interview Questions

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Wrapper Classes | Interview Questions

April 22, 2017
Posted by Pumpkin

In this post, we will discuss some of the most asked interview questions on wrapper classes. Java is an object-oriented language and can view everything as an object. A simple file can be treated as an object (with java.io.File), an address of a system can be seen as an object (with java.util.URL) and an image can be treated as an […]

Singleton Design Pattern

In Design Pattern article we have seen different types of design pattern available. In this article we will take one of the simplest design pattern from the Creational Design Pattern. Singleton Design Pattern is part of the creational design pattern. In Singleton design pattern restricts the instantiation of a class and ensures that only one instance of the class […]

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