Need help returning (not printing) avg GPA from array??

Question

Here's what I have so far. After returning the value then I gotta print the avg in a separate method. I also need to check the names of the first and last student using an "equals" method. Please someone help with whatever you can. Here's what I got:
import java.util.Scanner;
public class StudentLists {
//Main method. Prompts user for the number of students.
   public static void main(String[] args) {
   Scanner in = new Scanner(System.in);
   System.out.print("Please enter the number of students in this class: ");
   int s = in.nextInt();
   Student[] students=new Student[s];
   FillStudents(s,students);
   printAll(students);
   public static void FillStudents(int s, Student[] students){
   for (int i=0; i<s; i++)
        Scanner inf = new Scanner(System.in);
        System.out.println("Please enter student's first name: ");
    String first = inf.nextLine();
    System.out.println("Please enter student's last name: ");
        String last=inf.nextLine();
        System.out.println("Please enter the number of credits completed: ");
        int c=inf.nextInt();
        System.out.println("Please enter student's GPA: ");
        Double g=inf.nextDouble();
        students[i] = new Student(first, last, c, g);
    public static void printAll(Student[] students) {
    System.out.println("Names      Credits  GPA");
       for(int i = 0; i < students.length; i++)
    System.out.println(students);
public static Double getAvg(Student[] students, Double g){
double sum=0.0;
double avg=0.0;
for(int i=0; i<students.length; i++){
sum+=g;
avg=sum/students.length;
return avg;

Answer 1

Oh no I wasn't giving any orders. I was saying I have been trying to edit what I have, but I can't figure out how to get the method right to do my average of the GPA from the loop. I don't know what to put in there. I was just asking if you would write it and then kind of explain what u did for me please.
import java.util.Scanner;
public class StudentLists {
//Main method. Prompts user for the number of students.
   public static void main(String[] args) {
   Scanner in = new Scanner(System.in);
   System.out.print("Please enter the number of students in this class: ");
   int s = in.nextInt();
   Student[] students=new Student[s];
   FillStudents(s,students);
   printAll(students);
   public static void FillStudents(int s, Student[] students){
   for (int i=0; i<s; i++)
        Scanner inf = new Scanner(System.in);
        System.out.println("Please enter student's first name: ");
    String first = inf.nextLine();
    System.out.println("Please enter student's last name: ");
        String last=inf.nextLine();
        System.out.println("Please enter the number of credits completed: ");
        int c=inf.nextInt();
        System.out.println("Please enter student's GPA: ");
        Double g=inf.nextDouble();
        students[i] = new Student(first, last, c, g);
    public static void printAll(Student[] students) {
    System.out.println("Names      Credits  GPA");
       for(int i = 0; i < students.length; i++)
    System.out.println(students);
public static Double getAvg(Student[] students){
double sum=0.0;
double avg=0.0;
for(int i=0; i<students.length; i++){
avg=sum/students.length;
System.out.println(avg);
return avg;