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GC overhead limit exceeded – Java Heap analysis

This post is the continuation of our original GC overhead limit exceeded problem patterns post. Proper Java Heap analysis is critical in order to eliminate your OutOfMemoryError: GC ...
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Secure Password Storage – Don’ts, dos and a Java example

The importance of storing passwords securelyAs software developers, one of our most important responsibilities is the protection of our users’ personal information. Without ...
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Java High CPU troubleshooting guide – part 1

This article is part 1 of a series that will provide you with a comprehensive guide on how you can troubleshoot and identify root cause of Java high CPU problems. This guide is also ...
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The depths of Java: API leak exposed through covariance

Java can be very tricky some times, especially in API design. Let’s have a look at a very interesting showcase. jOOQ strongly separates API from implementation. All API is in the ...
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NetBeans Usability Tips

Java IDEs have come a long way since the days of JBuilder (though JBuilder seemed like a welcome advance at the time). Today’s Java IDEs (such as NetBeans, Eclipse, IntelliJ ...
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The Visitor Pattern Re-visited

The visitor pattern is one of the most overrated and yet underestimated patterns in object-oriented design. Overrated, because it is often chosen too quickly (possibly by an architecture ...
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Maven Build Dependencies

Maven and Gradle users who are familiar with release and snapshot dependencies may not know about TeamCity snapshot dependencies or assume they’re somehow related to Maven (which ...
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Implementing the State Machine Pattern as a Stream Processor

In my last blog, I said that I really thought that some of the Gang Of Four (GOF) patterns were becoming somewhat obsolete, and if not obsolete then certainly unpopular. In particular ...
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Java 7: Closing NIO.2 file channels without loosing data

Closing an asynchronous file channel can be very difficult. If you submitted I/O tasks to the asynchronous channel you want to be sure that the tasks are executed properly. This can ...
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NetBeans 7.1: Create a Custom Hint

I have talked about some of my favorite NetBeans hints in the posts Seven NetBeans Hints for Modernizing Java Code and Seven Indispensable NetBeans Java Hints. The fourteen hints covered ...
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