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'm getting better with Java, even to the point where I'm almost comfortable with it, but the purpose behind one concept still eludes me: What is method overriding, and why should I care about it?

A Java class inherits these methods and can override any method that’s not declared final. For example, the non- final toString() method can be overridden, whereas the final wait() methods cannot.