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Decorator Design Pattern Applied

Hi there! Today i’m gonna show the decorator design pattern in action. The decorator design pattern is a largelly used design pattern while dealing with grafics, trees and dynamic ...
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Oracle’s Latest Java 8 Update Broke Your Tools — How Did it Happen?

If you’ve been keeping up with the news in the Java world lately, you’ve probably heard that the latest Java 8 build released by Oracle, Java 8u11 (and Java 7u65), introduced errors ...
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Difference between getPath(), getCanonicalPath() and getAbsolutePath() of File in Java

The File API is very important one in Java, since it gives access of File system to Java programs. Though Java’s file API is rich, there are lot of subtleties to know when you ...
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Java’s Volatile Modifier

A while ago I wrote a Java servlet Filter that loads configuration in its init function (based on a parameter from web.xml). The filter’s configuration is cached in a private field. ...
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Default Methods: Java 8’s Unsung Heros

A few weeks ago I wrote a blog saying that developers learn new languages because they’re cool. I still stand by this assertion because the thing about Java 8 is it’s really ...
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Using IntelliJ bookmarks

This is a quick post about IntelliJ’s nice bookmark feature. IntelliJ gives you the option to bookmark single lines of code. After a line has been bookmarked, you can use various ...
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Getting A List of Available Cryptographic Algorithms

How do you learn what cryptographic algorithms are available to you? The Java spec names several required ciphers, digests, etc., but a provider often offers more than that. Fortunately ...
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The 10 Most Annoying Things Coming Back to Java After Some Days of Scala

So, I’m experimenting with Scala because I want to write a parser, and the Scala Parsers API seems like a really good fit. After all, I can implement the parser in Scala and wrap ...
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Why I distrust wildcards and why we need them anyway

In any programming language that combines subtype polymorphism (object orientation) with parametric polymorphism (generics), the question ofvariance arises. Suppose I have a list of ...
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Testing code for excessively large inputs

When writing unit tests we mostly focus on business correctness. We do our best to exercise happy path and all edge cases. We sometimes microbenchmark and measure throughput. But one ...
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