Differences between instance members and Class Members

1. instance members

Instance members include instance member variables and instance Member methods. instance member variables (object fields) and methods (Object methods) are subordinate to objects, the value of the instance variable represents the state of the object, and the instance Member method represents the behavior of the object. Only after an object is created can the instance member variables and instance Member methods be accessed. The instance members can be accessed through the "Object Name. variable name (method name)" method.

 

2. Class Members

Class Members (static members) must be identified with the keyword static. class members include class member variables and class member methods. class members belong to the class, this means that the class name can directly invoke the class member variable or call the class member method, and can reference the class member even if no object is created.

Differences between instance members and Class Members