Can anyone help me I am trying to make a class NodeIter that

Can anyone help me, I am trying to make a class NodeIter<T> that iterates over the values stored in a linked list from a Node<T> objects. The class needs to be implemented using the java.util.Iterator<T> interface. (Which is located here https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html)

I think I have implemented the constructor and the hasNext() function correctly, what I need help with is next() method which returns the next element in the iteration.

I have given the code I have so far for the NodeIter<T> class and also the Node<T> class

import java.util.*;

public class NodeIter<T>
{
   public Node<T> next;
   public NodeIterator(Node<T> n)
   {
       next = n;
   }
   public boolean hasNext()
   {
       return next != null;
   }
   public T next()
   {
       if(hasNext())
       {
           Node<T> curr = next;
           return curr;
       }
       return null;
   }
}

public final class Node<T>
{
   public final T v;
   public Node<T> next;
   public Node (T val, Node<T> link)
   {
       v = val;
       next = link;
   }
}
  

Solution

import java.util.NoSuchElementException;
import java.util.Iterator;

public class Range implements Iterable<Integer> {
private int start, end;

public Range(int start, int end) {
this.start = start;
this.end = end;
}

public Iterator<Integer> iterator() {
return new RangeIterator();
}

// Inner class example
private class RangeIterator implements
Iterator<Integer> {
private int cursor;

public RangeIterator() {
this.cursor = Range.this.start;
}

public boolean hasNext() {
return this.cursor < Range.this.end;
}

public Integer next() {
if(this.hasNext()) {
int current = cursor;
cursor ++;
return current;
}
throw new NoSuchElementException();
}

public void remove() {
throw new UnsupportedOperationException();
}
}

public static void main(String[] args) {
Range range = new Range(1, 10);

// Long way
Iterator<Integer> it = range.iterator();
while(it.hasNext()) {
int cur = it.next();
System.out.println(cur);
}

// Shorter, nicer way:
// Read \":\" as \"in\"
for(Integer cur : range) {
System.out.println(cur);
}
}
}