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.
To refer to class variables and methods, you join the class's name and the name of the class method or class variable together with a period ('.'). Methods and variables that are not class methods or class variables are known as instance methods and instance variables.nstance Methods and Variables. While System's. When the System class is loaded into the application, the class instantiates PrintStream and assigns the new PrintStream object to the. As you see, you refer to an object's instance methods and variables similar to the way you refer class methods and variables.