The PATCH method is one the the less well loved HTTP methods simple because until recently there really wasn’t a standard PATCH format. This has been standardized for JSON for a while now so there are quite a few libraries that will do the heavy lifting for you. For the purposes of this blog I am going to use json-patch ...

In my previous entry, we looked at using the feature of MOXy to control the level of data output for a particular entity. This post looks at an abstraction provided by Jersey 2.x that allows you to define a custom set of annotations to have the same effect. As before we have an almost trivial resource that returns an object ...

Once nice little features of most debuggers that I have been exercising recently is the ability to log information on a breakpoint. This can be a really useful was to understand code without having to modify it is involve byte code modification. Let’s consider this very trivial and inefficient implementation of a function to return the n’th number in the ...

So I have been ponder an enhancement required on the Tyrus project that would allow a user to broadcast to a subset of client connected to a URL across a cluster of machines. There are various way of doing this; but since I was playing with JDK 8 this problem definitely looked like a nail.   To this end I ...

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 take this seriously then it is a good idea to extend this idea to you automated testing; but coming up with a comprehensive ...

Sometimes it would be really nice to have named method parameter in Java, this doesn’t look likely for a long while but there is always another little work around, for example using a builder pattern to get similar behaviour, that will bridge the gap for a little bit. It occurred to me that using the Lambda support in JDK 8 ...

When a developer is working in Java there are a few failure cases you always want to know about even if you were trying to debug something else. Here is a list of the persistent breakpoints that should be enabled in every IDE. (IMHO of course) Yes in theory you should be able to just get this from a good ...

So I have been playing around with Tyrus, the reference implementation of the JSR 356 WebSocket for Java spec. Because I was looking at test tooling I was interested in running both the client and the server side in Java. So no HTML5 in this blog post I am afraid. In this example we want to sent JSON back and ...

One of the annoyances if you have a load of tests for a particular project is that running them can tie up your machine for a while. There are also sometimes consistency issues when running on different machines with different window managers and operating system versions. One thing we do is for every main hudson job we create a copy ...