Stub class---stub in essay ⑧java

Stub class---Stub in Java

The ① stub class is a class that implements an interface, but every method that is implemented is empty.

Its role is: If an interface has many methods, if you want to implement this interface, it is necessary to implement all the methods. But a class may require only one or two of these methods in terms of business. If you implement this interface directly, all other unrelated methods are implemented, in addition to implementing the required methods. If you implement an interface by inheriting the stub class, you are relieved of the hassle.

Stub class---stub in essay ⑧java