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 ...

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.

Learn how and why Java developers use method overloading, then test your learning against the Java virtual machine itself.

There is a reason why Java method modifiers exist. If you call public methods internally and don't understand why, your developers could face major class issues.