Therefore, learning about variables in Java should be among the very first things you do when picking up the language. In this post, you’ll find everything you need to know.

In Java, there are four types of scope: class, method, block, and local. Class scope means that the variable is declared outside any method or block, and belongs to the class as a whole.

The "Understanding Java threads" series concludes by uncovering some of the loose ends of threading: thread groups, volatility, thread-local variables, timers, and thread death.

Method and variable handles vs. Java reflection To truly understand MethodHandles and VarHandles —what they do and why they are useful—it’s helpful to know a few things about reflection in Java.