JavaFX is an awesome UI framework, but there can definitely be deployment issues. The Javapackager tool improves ease of native installer creation. Here's a quick overview of JavaFX applications with auto updates.
The open source NGINX v. 1.9.11 is out, and features an awesome addition: dynamic modules. These let you load separate shared object files at runtime. Learn more about the latest open source NGINX 1.9.11 release!
Java compilers make Java source code into bytecode. Did you know all Java classes start with the word CAFEBABE? Check out this awesome look at the Java magic word.
You've probably used exceptions in Java, but have you used them properly? Generally, exceptions are for exceptional cases. See whether or not you should use checked exceptions, and when and how to use Java exceptions.
Java 8's debut included a neat concurrency too, the CompletableFuture class. Here's an awesome look at CompletableFutures, with a glance at combining and composing tasks.
In programming, traits have been around in Scala and PHP a while, but are relatively new through default methods in Java. Here's a quick example on how to use traits in Java 8!