Write a program that prompts user to enter five numeric test score. the program should display the corresponding letter grade and class average

import java. util. Scanner;

public class Student {

public static void main (String[ ] args) {

//Enter 5 test scores

int[ ] marks=enterMark ();

//calculate average

double averageScore=calAverage (marks);

//calculate grade

char theGrade=letterGrade (marks);

//Display average

System. out. println ("Average: " + average Score);

//Display grade

System. out. println (" Grade: " + theGrade);

/* * method collects 5 test scores and returns reference*/

public static int[ ] enterMark () {

int[ ] arr=new int[5];

//create Scanner object

Scanner keyboard=new Scanner (System. in);

int index=0;

while (index
System. out. print ("Enter test " + (index+1));

arr[index]=keyboard. nextInt ();

index++;

}

return arr;

}

/**method calculates and returns average*/

public static double calAverage (int[ ] arr) {

double total=0.0; / /to hold total

double average=0.0; //hold average

for (int count=0; count
total+=arr[count];

}

average=total/arr. length;

return average;

}

/* * method calculates and returns grade*/

public static char letterGrade (double ave) {

char grade; / /to hold grade

if (ave >30)

grade='D';

if (ave >50)

grade='C';

if (ave > 60)

grade='B';

if (ave > 70)

grade='A';

else

grade='F';

return grade;

}

}