Learn all the module system basics in this tutorial: how to declare modules with module-info.java, compile, package, and launch them and what role the module path and module graph play.
Java 9 introduces unified logging, a central mechanism configurable with -Xlog to observe class loading, threading, the garbage collector, the module system, etc.
Hand in hand with a class’s definition of equality goes a matching implementation of hashCode. Again, there are a couple of things to be considered to get it right. Let’s check ’em out!
A fundamental aspect of any Java class is its definition of equality. It is determined by a class’s equals method and there are a couple of things to be considered for a correct implementation. Let’s check ’em out so we get it right!
A list of the problems that make up JAR hell and how they relate to modern development tools like Maven and OSGi.
Covering literally everything there is to know about Java 8’s default methods.
An argument for using multiple return statements in a method (as opposed to adhering to the single return myth).