The Fission Theory: This theory proposes that the Moon was once part of the Earth and somehow separated from the Earth early in the history of the solar system.
When you actually use that class to make a THING, this is what you make. A method is a bit of code that can be called when needed (often as part of an class, but not always) Here's an example: I write a class called Ball. In my main code, I then write a=Ball.new, b=Ball.new, c=Ball.new.
This article explains about method and it's structure in java. Definition of Method. A method is a set of program statements. It forms the fundamental unit of execution in java. Each method exists as part of a class. During an execution of a program, methods may invoke other methods in the same or a different class. No program code can exist outside a method, and no method can exist outside a class.