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Integrate AspectJ with NetBeans Platform Development

Are you developing your project using the NetBeans Platform? Are you willing to use AspectJ to use AOP? You do not know how to integrate the AspectJ compiler into the builds of NetBeans? If your answer is yes, this post is for you ...
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Too Many Parameters in Java Methods, Part 3: Builder Pattern

In my two immediately previous posts, I looked at reducing the number of parameters required for a constructor or method invocation via custom types and parameter objects. In this post, I look at use of the builder pattern to redu ...
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Too Many Parameters in Java Methods, Part 2: Parameters Object

In my previous post, I looked at some of the problems associated with long parameters lists for methods and constructors. In that post, I discussed replacing primitives and built-in types with custom types to improve readability a ...
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instanceof operator and Visitor pattern replacement in Java 8

I had a dream where instanceof operator and downcasting were no longer needed but without clumsiness and verbosity of visitor pattern. So I came up with the following DSL syntax:               &n ...
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Java Auto-Unboxing Gotcha. Beware!

What do you think that the following code snippet will print?                     Object o = true ? new Integer(1) : new Double(2.0); System.out.println(o); Yes! It will print: 1. ...
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Too Many Parameters in Java Methods, Part 1: Custom Types

I consider lengthy parameters lists in constructors and methods to be another “red flag” in Java development that may not necessarily be “wrong” in terms of logic and functionality, but often hint at the hi ...
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Stacks and Queues in Java

I have been working on some Java code recently that required both a stack and a queue. The choices to use aren’t immediately obvious. There is a Queue interface, but no clear concrete implementation to use. There is also a Stack ...
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Unique hashCodes is not enough to avoid collisions

There is a common misconception that if you have unique hashCode() you won’t have collisions.  While unique, or almost unique, hashCodes are good, this is not the end of the story. The problem is that the size of a HashMap ...
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Write an auto-debugger to catch Exceptions during test execution

Previously I have stated that there are some exceptions you would always want to keep an debugger breakpoint on for. This help prevents code rotting away without you noticing – sometimes masking a different problem. If you t ...
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Java Object to Object Mapper

I’ve been using Dozer some time on the project. But, recently I have got very interesting error which motivates me to look around and try to use other Object to Object mapper. Here is the list of tools I’ve found:Doz ...
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