How would I make methods to add/remove students at a specific location in the linked list? I have given my 3 classes i made. StudentMain, StudentLinkedList, and Student

public class StudentMain {

static StudentLinkedList studentList;

public static void main(String[] args) {

Student student = new Student("John", "Doe", "doe1j");

studentList = new StudentLinkedList(student);

System.out.println(studentList.size());

student = new Student("John", "Deer", "deer1j");

studentList.add(student);

System.out.println(studentList.size());

System.out.println();

System.out.println(studentList.toString());// prints students in list

System.out.println();

System.out.print(student.getFname() + " ");// gets first name of student

System.out.println(student.getLname());// gets last name of student

}

}

public class Student {

private String fname;

private String lname;

private String id;

private long rnumber;

Student next; // this is the pointer to the next Student node in the list

Student(String FirstName, String LastName, String ID) {

fname = FirstName;

lname = LastName;

id = ID.toLowerCase();

rnumber = 0;

}

Student(String FirstName, String LastName, String ID, long RandomNumber) {

fname = FirstName;

lname = LastName;

id = ID.toLowerCase();

rnumber = RandomNumber;

}

public String getFname() {

return fname;

}

public String getLname() {

return lname;

}

public String getId() {

return id;

}

public long getRnumber() {

return rnumber;

}

public String toString() {

return fname + "," + lname + "," + id + "," + String.valueOf(rnumber);

}

public Student getNext() {

return next;

}

public void setNext(Student nextStudent) {

next = nextStudent;

}

}

public class StudentLinkedList {

private Student firstNode;

private static int listCounter;

// Constructor: must provide a "head" node for us

public StudentLinkedList(Student student) {

firstNode = student;

listCounter = 1;

}

// Returns number of elements in list to the outside

public int size() {

return listCounter;

}

public void add(Student student) {

Student tempNode = student;

Student currentNode = firstNode; // start at the beginning

while (currentNode.getNext() != null) { // not at the end yet, move node by node

currentNode = currentNode.getNext();

}

// the last node.next currently is null, needs to point to our newly added node

currentNode.setNext(tempNode);

// all done, now update our counter

listCounter++;

}

public void remove(Student student) {

Student lastNode = null;

Student currentNode = firstNode; // start at the beginning

while (currentNode.getNext() != null) { // not at the end yet, move node by node

lastNode = currentNode;

currentNode = currentNode.getNext();

}

lastNode.setNext(null);

listCounter--;// all done, now update our counter

}

@Override

public String toString() {

String dummyString = "";

Student currentNode = firstNode;

while (currentNode.getNext() != null) {

dummyString += currentNode.toString();

currentNode = currentNode.getNext();

}

return dummyString;

}

}