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Core Java
Optional in Java 8 cheat sheet
java.util.Optional<T> in Java 8 is a poor cousin of scala.Option[T] and Data.Maybe in Haskell. But this doesn’t mean it’s not…
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Enterprise Java
50 Servlet Interview Questions and Answers
Servlets are very important topic of Java EE and all of the web applications framework such as Spring and Struts…
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Software Development
10 More Common Mistakes Java Developers Make when Writing SQL
I was positively surprised to see how popular my recent listing about 10 Common Mistakes Java Developers Make when Writing SQL was, both…
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Core Java
Simple and lightweight pool implementation
Object pools are containers which contain a specified amount of objects. When an object is taken from the pool, it…
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Enterprise Java
Async Servlet Feature of Servlet 3
Before we jump into understanding what Async Servlet is, let’s try to understand why do we need it. Let’s say…
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Core Java
5 Things You Didn’t Know About Synchronization in Java and Scala
Practically all server applications require some sort of synchronization between multiple threads. Most of the synchronization work is done for…
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Software Development
KISS My YAGNI
We are all familiar with the KISS (Keep It Simple, Stupid) and YAGNI (You Ain’t Gonna Need It) principles. And…
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Software Development
Why is your software aging?
I recently stumbled upon a term software aging. My first thoughts on the subject were not too positive, especially after…
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Enterprise Java
Servlet Upload File and Download File Example
File Upload and Download and common tasks in a java web application. Since I have written a lot about java…
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