Introduction - If you have any usage issues, please Google them yourself
Enter student information, including Student ID/name/age, followed by a student enter the information in the following format: Scanner 1, Zhang San, 20 students finished entering information, type over on behalf of the end of requirements: keep all student information (List), and calculate the average age of students in class/Test (main) Package/Multi-state/override equals hashCode toString/List/Integer regular checking/string shrink-wrap