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The Illuminating Javadoc of JDK 8

One of the nice features of the standard JDK 8 API documentation is the ability to view all or different categories of methods as discussed in my blog post JDK 8 Javadoc Tweaked For ...
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Difference between WeakReference vs SoftReference vs PhantomReference vs Strong reference in Java

WeakReference and SoftReference were added into Java API from long time but not every Java programmer is familiar with it. Which means there is a gap between where and how to use WeakReference ...
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Default methods an approach to extend legacy code

As you know the new version of java was released on 18 March 2014 and i am going to introduce a serial of posts to demonstrate its new features and maybe in some points i will talk ...
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What are Mockito Extra Interfaces?

Mockito is my favored little helper if it comes down to write light weight JUnit tests. It is very useful to replace the ‘real’ dependencies of a unit under test easily by mocks ...
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JUnit ExpectedException rule: beyond basics

There are different ways of handling exceptions in JUnit tests. As I wrote in one of my previous posts, my preferable way is using org.junit.rules.ExpectedException rule. Basically, ...
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Java can finally join strings

I am sure you were in a situation in which you wanted to join multiple strings. If you were using a programming language other than Java you probably used the join() function provided ...
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How HashMap works in java

Most common interview questions are “How HashMap works in java”, “How get and put method of HashMap work internally”. Here I am trying to explain internal functionality ...
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Migrating from javaagent to JVMTI: our experience

When you need to gather data from within the JVM, you will find yourself working dangerously close to the Java Virtual Machine internals. Luckily, there are ways you can avoid getting ...
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Simplifying ReadWriteLock with Java 8 and lambdas

Considering legacy Java code, no matter where you look, Java 8 with lambda expressions can definitely improve quality and readability. Today let us look at ReadWriteLock and how we ...
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Getting JUnit Test Names Right

Finding good names is one of the challanges of crafting software. And you need to find them all the time and for everything – classes, methods, variables, just to name a few. But ...
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