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40 Java Collections Interview Questions and Answers

Java Collections Framework are the fundamental aspect of java programming language. It’s one of the important topic for java interview questions. Here I am listing some important ...
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Static factory methods vs traditional constructors

I’ve previously talked a little bit about the Builder Pattern, a useful pattern to instantiate classes with several (possibly optional) attributes that results in easier to read, ...
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The ins and outs of immutability

So in my first post I talked a little bit about the builder pattern and I mentioned a really powerful but yet overlooked concept: immutability. What is an immutable class? It’s simply ...
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The builder pattern in practice

I’m not going to dive into much details about the pattern because there’s already tons of posts and books that explain it in fine detail. Instead, I’m going to tell you why and ...
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Implementing Producer/Consumer using SynchronousQueue

Among plenty of useful classes which Java provides for concurrency support, there is one I would like to talk about: SynchronousQueue. In particular, I would like to walk through Producer ...
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One jar to rule them all

Trip down the memory lane Back in 1998, when I was a C/C++ developer, trying my hands on Java, a few things about the language were, to put it mildly – irritating – for ...
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Iterator Pattern and Java

Hello all, in this post we’ll be checking on the Iterator Pattern. A design pattern that I know many of you have already used, but maybe you didn’t realize it was pattern ...
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10 XML Interview questions and answers for Java Programmer

XML Interview questions are very popular in various programming job interviews, including Java interviews for web developer. XML is a matured technology and often used as standard for ...
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Java Memory Model and optimisation

Overview Many developers of multi-threaded code are familiar with the idea that different threads can have a different view of a value they are holding, this not the only reason a thread ...
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Loan pattern in Java (a.k.a lender lendee pattern)

This post is about implementing loan pattern in Java. Use Case Implement separation between the code that holds resource from that of accessing it such that the accessing code doesn’t ...
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