I need help with this java programming challenge:
8. Grade Book
A teacher has five students who have
each taken four tests. The teacher uses the following grading
scale to assign a letter grade to a student, based on the average of his or her four test scores:
Test Score Letter Grade
Write 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 four
doubles each to hold each student’s set of test scores. You may find using a single 5×4
mui-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 a
letter grade based on the average. Ahough averages are often floating-point values , you should
cast the average test score to an integer when comparing with the grading scale. This reduces the
possibility of error. Demonstrate the class in a program that allows the user to enter each
student’s name and his or her four test scores. It should then display each student’s average test
score and letter grade.
Input Validation: Do not accept test scores less than zero or greater than 100.