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Even in the jdk there is bad code
Java 7, TreeSet and NullPointerException. Recently I tried to compile with java 7 a project developed with java 6. Lot of fun happened during tests execution, tests that in java 6 were ...
How to create a memory leak
This is going to be a rather evil post – something you will be googling when you really wish to make someone’s life a misery. In the world of Java development memory leaks are just ...
Why a synchronized StringBuffer was never a good idea
Introduction StringBuffer is a synchronized class for mutable strings. The main problem with making it synchronized is thatIt was usually used as a local variable so making it synchronized ...
Package your classes by Feature and not by Layers
Most of the enterprise Java applications share some similarities in their design. Mostly the packaging of these applications are driven by the framework used by them like Spring, EJBs ...
Understanding Dynamic Proxy: Spring AOP Basics
Why AOP : To Understand AOP(Aspect Oriented Programming), we need to understand Cross Cutting Concerns in software development . In every project , there is some amount of code which ...
Infamous Java bugs and pitfalls
In year 2000, I was in university and was on the verge of picking a language to build my career on. Java was not yet the mainstream but highly popular and on the spots. Applets were ...
HotSpot GC Thread CPU footprint on Linux
The following question will test your knowledge on garbage collection and high CPU troubleshooting for Java applications running on Linux OS. This troubleshooting technique is especially ...
Java 7 Update 21 Security Improvements in Detail
Oracle released three updates to Java yesterday. It is important to note that they contain several security related changes. The majority of those changes have been announced since ...
JDK 8 Javadoc Tweaked For Methods Listings
Since it’s beginning, Javadoc output has been largely static HTML with navigation links and simple stylesheet styling of its appearance. Java SE 7 saw the first significant change ...
Arrays.sort versus Arrays.parallelSort
We all have used Arrays.sort to sort objects and primitive arrays. This API used merge sort OR Tim Sort underneath to sort the contents as shown below: public ...
