To create a global constant shared by every instance of a class, you combine Java's static and final keywords. The static keyword means the value is the same for every instance of the class. Final ...

A method declaration optionally begins with keyword static (for a non-entity behavior) and continues with a returnType that’s followed by a non-reserved identifier that names the method.

According to the Java Enhancement Proposal 445: …these changes allow us to write Hello, World! with no access modifiers, no static modifiers, and no String[] parameter, so the introduction of these ...

Pointers to methods need an object because all non-static member functions can access the object’s variables, those prefixed with this-> (even if the this-> notation can be omitted).