Bubble sort on double linked list

public void bubbleSort() {  
    boolean done = false;  
    while (!done) {  
        Node cur = head;  
        done = true;  
        while(cur != tail) {  
            if (cur.getNext().getCount()>cur.getCount()) {  
                swap(cur.getNext(),cur);  
                done=false;  
            }  
            cur = cur.getNext();  
        }  
    }  
}