(Jeff Friesen) Exploring puzzling code to figure out why it doesn’t do what seems obvious is one way to improve your programming skills. In this post, I introduce you to various Java-oriented puzzlers from Jens Dietrich, Joshua Bloch and Neal Gafter, and myself.

(hexgear) In this article, I will share how to parse JSON using JSON-Java in Android, however the snippet is not limited to Android only.

(Gabriele Tomassetti) As we conclude the Parsing in Java series, we examine the variety PEG parsers and parser combinators out there to determine when they should be used.

(Paul Krill) With the initial release candidate build for Java 9 now published, Oracle has proposed that from here on out, only “showstopper” bugs be fixed for the production Java 9 release, which is due September 21.

(Javin Paul) After Restlet, Jersey is another popular open source framework to create RESTful web services in Java.

(lukaseder) In a recent article, I’ve shown that programmers should always apply a filter first, map later strategy with streams. The example I made there was this one:

(Bill O’Neil) Take a look at how to use query and path parameters in Undertow. In addition to some examples, there are some best practices to keep in mind as well.

(Per Minborg) Learn how to pick the right method parameter types and get more robust and shorter code in your Java applications.

(Bryian Tan) In this article, I will share the tips on how to dynamically add a help / tooltip / ScreenTip icon next to a form elements such as textbox, label, paragraph, button, etc.

(David Walsh) Every open source framework has its own methods of extending functionality; some make extending incredibly easy and others…not so much. Most of the time it comes down to how well the framework is documented.