Mixins provide us with a great deal of power to manipulate existing classes, one of the most useful of which is to monkey-patch new interfaces onto existing classes as described in the first part of ...

Reflection was essential to the advanced Java toolkit for years. Now it's being superseded by newer, safer options. Here's how to use MethodHandle and VarHandle to gain programmatic access to methods ...

I've got an odd issue that I was hoping the Hive Mind might shed some light on. I'm working with Morphia which is the Java MongoDB API. When peforming a query, there is a method called ...

Understanding type compatibility is fundamental to writing good Java programs, but the interplay of variances between Java language elements can seem highly academic to the uninitiated. This two-part ...

The main method in Java is like the front door to your program – it's where everything begins. When you run a Java program, the Java Virtual Machine (JVM) looks specifically for this method to know ...