Queue Using LinkedList - some functionalities missing

#1

How do we get size of the queue and display it’s contents?

#2

for a LinkedList list;

 //returns number of elements in the queue
    public int size() {
        return list.size();
    }

    //returns string representation of queue
    public String toString() {
        String result = "";
        for(int i=front;i<rear;i++) 
            result+=list.get(i)+" ";
        return result;
    }