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I need help with this java programming challenge:8. Grade BookA teacher has five students who have

I need help with this java programming challenge:

8. Grade BookA teacher has five students who have

each taken four tests. The teacher uses the following gradingscale to assign  a letter grade to a student, based on the average of his or her four test scores:Test Score Letter Grade90-100 A80-89 B70-79 C60-69 D0-59 FWrite a class  that uses a String  array  or an ArrayList object  to hold the five students' names ,an array  of five characters  to hold the five students' letter grades, and five arrays  of fourdoubles  each to hold each student's set of test scores. You may find using a single 5x4multi-dimensional array  easier to manage instead of a separate array  for each set of test scores. The class  should have methods  that return a specific student's name , the average test score, and aletter grade based on the average. Although averages are often floating-point values , you shouldcast the average test score to an integer  when comparing with the grading scale. This reduces thepossibility of error. Demonstrate the class  in a program  that allows the user to enter eachstudent's name  and his or her four test scores. It should then display each student's average testscore and letter grade.Input Validation: Do not accept test scores less than  zero or greater than  100.

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