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Difference between WeakReference vs SoftReference vs PhantomReference vs Strong reference in Java

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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 and SoftReference in Java. Reference classes are particularly important in context of How Garbage collection works. As we all know that Garbage Collector reclaims memory from objects ...

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Good Vs Evil

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Posts about agile dying or becoming irrelevant come and go. God knows I’ve contributed to that movement. The latest wave started with Agile Manifesto signatory Dave Thomas, with “Agile is dead, long live Agility”. The discussion later continued on Twitter and the XP mailing list under the title “Taking agile back”. Taking it from whom? From the evil consultants who ...

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Default methods an approach to extend legacy code

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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 about my ideas and criticism about them. The first feature which i think is important is “Default methods”, In all previous versions of ...

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Why Hire Older Engineers

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Another day, another article about age and technology. The comments of these articles usually escalate into some generational war played out with mythology and anecdotes regarding relative energy levels and productivity, work hours, the value of experience, and general competence. These discussions usually make no progress, while some useful topics are ignored.   As someone who has been around programmers (and ran a ...

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The Way of the Pro

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Enterprise developers are serious professionals. They don’t waste their time for creating silly things. They leave this to the hipster developers. Enterprise developers write software which keeps our society running. They are the backbone of the modern society, and they know it. Enterprise developers claim that they aren’t driven by money. They are driven by “professionalism” and the will to ...

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Java EE: The Basics

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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 or pun intended! This is not a Java EE ‘bible’ by any means. I am not capable enough of writing such a thing! So let us line up the ...

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What are Mockito Extra Interfaces?

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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 if necessary. In particular when working on the borderline to framework APIs such dependencies can otherwise be very expensive to setup. But sometimes the situation is a ...

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JUnit ExpectedException rule: beyond basics

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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, rules are used as an alternative (or an addition) to methods annotated with org.junit.Before, org.junit.After, org.junit.BeforeClass, or org.junit.AfterClass, but they are more powerful, and more easily shared between projects and classes. In this ...

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