What’s the difference between a class method and an instance method?

ANSWER: Class methods are declared as static hence they can be called without creating an instance of a class. Class methods can only operate on class members and not on instance variables since they are unaware of the instance members.
In order to use an instance method, you must create a instance of a class using the new keyword. Also instance methods are not declared as static.
Example: <class_name> <object_name> = new <constructor>;