Class variables are called static variables. There is only one occurrence of a class variable per JVM per class loader. When a class is loaded the class variables (aka static variables) are initialised.
Instance variables are non-static and there is one occurrence of an instance variable in each class instance (i.e. each object).
A static variable is used in the singleton pattern. (Refer Q45 in Java section). A static variable is used with a final modifier to define constants.
Instance variables are non-static and there is one occurrence of an instance variable in each class instance (i.e. each object).
A static variable is used in the singleton pattern. (Refer Q45 in Java section). A static variable is used with a final modifier to define constants.
