Java – Page 2 – Nikos Katsanos Blog

Java Libraries

Java Enum as a class

Recently i have been asked a fairly simple question. "Can you extend an enum?". My reaction to that was "Why would you want to do that?". But, given a second thought, i realized that i didn't really know the answer. (more…)

Posted on 17th May 201617th May 2016 by nikkatsa

Java Libraries

Deadlock

This article will present a deadlock and some tools to examine and identify it. A deadlock situation happens when two or more threads are waiting to acquire the object monitor of one or more objects that are already locked one of the competing threads. Hence, the threads will wait forever,…

Posted on 15th May 201615th May 2016 by nikkatsa

Java Libraries

A ThreadFactory

After Java 1.5 writing multithreaded code become much easier, compared to prior versions. Lots of logic was encapsulated behind classes that were baked inside the JDK. Additionally, the way developers were creating their threads radically changed. (more…)

Posted on 13th May 201615th May 2016 by nikkatsa

Java Libraries

The ‘Now’ Service

Quite many times, in our applications, we need to make use of the current time in milliseconds. Most of us follow the easy way and rely on java's System.currentTimeMillis(). (more…)

Posted on 9th May 201615th May 2016 by nikkatsa

Design Patterns

Design Patterns, Builder

The Builder is a design pattern which belongs to the family of creational design patterns. It comes very handy when an object is complicated to create (i.e has too many fields) or when the developer needs to control the initialization of an object. (more…)

Posted on 9th May 201615th May 2016 by nikkatsa

Design Patterns

Design Patterns, Singleton

Singleton, is probably, the most controversial object oriented design pattern. Many people even consider it an antipattern. It is used when one and only one instance of a class should exist per JVM (or classloader). (more…)

Posted on 24th April 201615th May 2016 by nikkatsa

Java Libraries

The Apache Commons CLI, Command Line Parsing

Quite a few times when writing a Java application, there is the need of passing command line arguments to the program itself. Usually, the application would have to validate those arguments. For example, making sure that the user passed in a numeric value, or a boolean one. Sometimes validate that…

Posted on 17th April 201615th May 2016 by nikkatsa

Productivity

IntelliJ Live Templates

I am a huge fan of IDEs. I truly believe that a powerful IDE can boost a programmer's productivity by orders of magnitude. Additionally, i also believe that each developer should treat his/her IDE as a tool in his/her toolbox and try to get the most out of it. Having…

Tag: Java

Java Libraries

Java Enum as a class

Posted on 17th May 201617th May 2016 by nikkatsa

Java Libraries

Deadlock

Posted on 15th May 201615th May 2016 by nikkatsa

Java Libraries

A ThreadFactory

Posted on 13th May 201615th May 2016 by nikkatsa

Java Libraries

The ‘Now’ Service

Posted on 9th May 201615th May 2016 by nikkatsa

Design Patterns

Design Patterns, Builder

Posted on 9th May 201615th May 2016 by nikkatsa

Design Patterns

Design Patterns, Singleton

Posted on 24th April 201615th May 2016 by nikkatsa

Java Libraries

The Apache Commons CLI, Command Line Parsing

Posted on 17th April 201615th May 2016 by nikkatsa

Productivity

IntelliJ Live Templates

Posted on 10th April 201615th May 2016 by nikkatsa