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both variables are defined inside the
class and outside to any method. Therefore both of these variables
are in the class scope.
Instance variable
instance variable belongs to an
instance of a class. Each instance of the class maintain its own copy
of the instance variable(s). Therefore the changes or operations that
are done with an instance variable will only be reflected in that
instance variable. (no other instance variables are affected)
here is an example for the instance
variable.
class sampleClass{
int count;
}
Class variable
class variables are known as static member variables. Class variable
is common to the all instances of the class. In other words, one
class variable will be shared with all instances of the class. Class
variables are modified with static modifier.
Here is an example for the class variable.
Class sampleClass{
static int count;
}
instance variable and class
variable.
Each object(instance) in the class has its own copy of instance
variables. But every instances(objects) in the class will be shared
one copy of class variables. Therefore the changes that are done for
the instance variables will only be visible to that particular
instance. But the changes that are done for class variables will be
visible to all the instances of that class. This is because the class
variables are shared among all instances of the class. Both class
variable and member variables have been identified as a member
variable of a class.
Hope this will helpful for you!
Regards
Chathuranga Tennakoon
