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java.util.Random in Java 8

One of the neat features of java.util.Random class in Java 8 is that it has been retrofitted to now return a random Stream of numbers. For eg, to generate an infinite stream of random ...
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Setup your Java development environment in your new Mac in 10 minutes (updated)

This is just a small update post that references 2 older entries ( a, b) , I just combine them in one, like an one step procedure plus making sure that everything works under the latest ...
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RxJava: From Future to Observable

I first came across Reactive Extensions about 4 years ago on Matthew Podwysocki’s blog but then haven’t heard much about it until I saw Matthew give a talk at Code Mesh a few weeks ...
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How to write one of the fastest expression evaluators in Java

Granted, the title is a bit of an attention grabber, but nevertheless true (You course you never trust a benchmark you didn’t fake yourself – but that’s another story). So ...
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An Annotation Nightmare

                      @XmlElementWrapper(name="orders") @XmlJavaTypeAdapter(OrderJaxbAdapter.class) @XmlElements({ @XmlElement(name="order_2",type=Order2.class), ...
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Memory leaks and memory management in Java applications

One of the more prominent features of the Java platform is its automatic memory management. Many people translate this feature erroneously into there are no memory leaks in Java. However, ...
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Determining Presence of Characters or Integers in String with Guava CharMatcher and Apache Commons Lang StringUtils

A recent Reddit post asked the question, “Is there a predefined method for checking if a variable value contains a particular character or integer?” That question-based ...
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Introduction To JUnit Theories

Have you ever read a mathematical theory? It typically reads something like this: For all a, b > 0  the following is true: a+b > a and a+b > b Just typically the statements ...
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(Part 2 of 3): Synopsis of articles & videos on Performance tuning, JVM, GC in Java, Mechanical Sympathy, et al

This is a continuation of the previous post titled (Part 1 of 3): Synopsis of articles & videos on Performance tuning, JVM, GC in Java, Mechanical Sympathy, et al. Without any ...
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ArrayList vs LinkedList

I must confess the title of this post is a little bit catchy. I have recently read this blog post and this is a good summary of  discussions & debates about this subject. But this ...
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