note- its a java program

Create a UML class diagram for the GradeBook class (available in Canvas). You can use a word processing program to do this. See page 87 for an example. Place your name at the top of the file. Name the file GradeBookUML. Create a GradeBookTest program that will use the GradeBook class. Be sure to put your name and required comments in the GradeBook.java file. You must create two GradeBook objects in the GradeBookTest progam. The first GradeBook object will be created with data (Strings) entered by the user in the command prompt window (terminal). The second GradeBook object will be created with the data for CIS 254 (use literal Strings that are double-quoted). Output the information for both GradeBook objects by calling the displayMessage method on each object. You must comment your code. Your name must appear in the output. You must follow the Programming Guidelines. Your program must compile in order to be graded. Do NOT use Eclipse, NetBeans, or IntelliJ for any labs or assignments. Do NOT create packages or projects; otherwise I will not be able to grade your assignment.