Use Java's extends keyword to derive a child class from a parent class, invoke parent class constructors and methods, override methods, and more.

I wrote about the NetBeans hint "Overridable Method Call in Constructor" in the blog post Seven Indispensable NetBeans Java Hints . In this post, I look at why having an overridable method called ...

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.