Programming Challenge 7.8 Grade Book

A Teacher has 5 students who have taken four tests. Teh 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

90-100 A

80-89 B

70-79 C

60-69 D

0-59 F

Write a class that uses a string array or an ArrayList object to hold the five students names, an array of five character to hold the five student' letter grades, and give arrays of four doubles each to hold each students set of test scores. The class should have methods that return a specific students name, the averge test score, and a letter grade based on the average.

Demonstrate the class in a program that allows the user to enter each student's name and his or her four test scores. It shouldthen display each students average test score and letter grade.

Input validation: do not accept test scores than than zero or greaer than 100.