listAlgorithms/ListNodeIterator.java

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package listAlgorithms;

import java.util.Iterator;

public class ListNodeIterator<T extends Comparable<T>> implements Iterator<ListNode<T>> {
    private ListNode<T> mHead = null;

    public ListNodeIterator(ListNode<T> listNode) {
        this.mHead = listNode;
    }

    @Override
    public boolean hasNext() {
        return this.mHead != null;
    }

    @Override
    public ListNode<T> next() {
        ListNode<T> retVal = mHead;
        if (hasNext()) {
            mHead = mHead.getNext();
        }
        return retVal;
    }

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

}