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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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Java EE: The Basics

Wanted to go through some of the basic tenets, the technical terminology related to Java EE. For many people, Java EE/J2EE still mean Servlets, JSPs or maybe Struts at best. No offence ...
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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, ...
java-interview-questions-answers

Java 8 Friday: Java 8 Will Revolutionize Database Access

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. For our Java ...
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How to use NodeManager to control WebLogic Servers

In my previous post, you have seen how we can start a WebLogic admin and multiple managed servers. One downside with that instruction is that those processes will start in foreground ...
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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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Java EE 7: What’s new???

I am a little ‘late to the party’ so to say… as far as ‘blogging’ about Java EE 7 is concerned. It has almost been 10 odd months since it was released back in June 2013, ...
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