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 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 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 5x4 multi-dimensional array easier to manage instead of 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. Although 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. SAMPLE RUN #3: java GradeBook Interactive Session Hide Invisibles Highlight: None Show Highlighted Only O Enter student.l.name : Louis.Bleriotu Enter student. Louis.Bleriot's.grade. for test.1:80- Enter student. Louis.Bleriot's.grade. for test.2:80- Enter student. Louis.Bleriot's.grade. for test.3:80- Enter student-Louis.Bleriot's grade. for-test.4:80- Enter student.2.name: Howard Hughes Enter.student. Howard Hughes's.grade for test.1:45 Enter student. Howard Hughes's.grade for test.2:66- .Enter student. Howard Hughes's.grade. for test.3:24- Enter.studentHoward Hughes's.grade. for test.4:68- Enter student.3.name: Amelia Earharte Enter student. Amelia Earhart's.grade. for test.1:87 Enter student. Amelia Earhart's.grade for test.2:75 Enter student.l.name : Louis. Bleriot- Enter.student. Louis.Bleriot's grade. for test.1:80- .Enter student. Louis.Bleriot's grade. for test.2:80- Enter.student. Louis.Bleriot's grade. for test.3:80- Enter.student-Louis.Bleriot's grade-for-test-4:80- Enter student.2.name: Howard Hughes- Enter student. Howard Hughes's grade.for.test.1:45 Enter.student. Howard Hughes's grade. for test.2:66 Enter.student. Howard Hughes's grade. for test.3:24 Enter student. Howard Hughes's grade.for.test.4:68 .Enter student.3. name: Amelia Earhart- Enter.student Amelia Earhart's.grade.for.test.1:87- Enter student. Amelia Earhart's.grade for test 2:75 Enter.student. Amelia Earhart's.grade for test.3:66- Enter.student. Amelia Earhart's.grade. for test.4:84- Enter.student.4. name: Charles Lindenergh- Enter student Charles.Lindenergh's grade-for-test.1:66 Enter.student. Charles .Lindenergh's grade. for+test2:65- Enter.student. Charles Lindenergh's grade.for.test.3:62-- Enter.student. Charles Lindenergh's grade. for test 4:62- Enter student.5.name: Manfred von Richtofen Enter student. Manfred von Richtofen's grade-for-test-1:97- Enter.student. Manfred. von Richtofen's grade for test 2:98- Enter.student Manfred von Richtofen's grade for test.3:99- Enter.student. Manfred. von Richtofen's grade. for test.4:100- === . Grade.Book. Data . === Student name:-Louis.Bleriote Average test score: 80.00 -Letter grade: B Student name: Howard Hughes Average test score: 50.75- Letter.grade: F- Student name: . Amelia Earhart- Average test score: .78.00 +Letter.grade:.CH Student name: Charles Lindenerghe +Average test score:.63.75- -Letter.grade :D =.=.=.=.= Student name: Manfred von Richtofend +Average test score: .98.50 Letter grade: AJ =
