Description: Design a landing system, which has two roles administrators and students. Students can enter a name and password to log in from the command line, login failures should be a corresponding message. Students display their information after landing, you can see all the other student information. After you enter the exit command to return to the login screen, enter the administrator user name and password, after the successful landing of all student information is displayed, you can choose to add or delete options, respectively, add or delete students.
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File list (Check if you may need any files):
lgSystem
........\LgSystemMain.java
........\Student.java
........\StudentList.java
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