Java post-class jobs

1.TestInherits

Validation results:

Experimental Analysis:

The construction method of two different parameter numbers is established.

Inherits grandparent and uses super to implement the grandparent (string string) method, and establishes its own construction method.

Inheriting the parent also inherits the grandparent, and establishes its own construction method.

The object that defines the child class completes the output in child because the child class inherits the parent and grandparent, so it also outputs their contents.

Java post-class jobs