Answer Happy

Java- My toString is not allowing it to print
the whole deque. It is only printing two elements of the deque. I
need ALL elements to be printed when I call the
system.out.println(deque). Thanks in
advance.
copyable code:
public class LinkedDeque<T> implements
DequeADT<T>
{
private int size=0;
private LinearNode<T> head, tail;

public LinkedDeque(int n)
{
size = 0;
head = tail = null;
}
public void enqueueFront(T element)
{
LinearNode<T> node= new LinearNode<T>(element);

if(isEmpty())
tail=head=node;
else
head.setNext(node);

head=node;
size++;
}

public void enqueueRear(T element)
{
LinearNode<T> node=new LinearNode<T>(element);

if(isEmpty())
head=tail=node;
else
tail.setNext(node);

tail=node;
size++;
}
public T dequeueRear() throws EmptyCollectionException
{
if (isEmpty())
throw new EmptyCollectionException("deque");
T result =tail.getElement();
tail=tail.getNext();

size--;

if(isEmpty())
head=null;

return result;
}

public T dequeueFront() throws EmptyCollectionException
{
if(isEmpty())
throw new EmptyCollectionException("deque");

T result=head.getElement();
head=head.getNext();
size--;

if (isEmpty())
tail=null;

return result;
}

public T getFront() throws EmptyCollectionException
{
if (isEmpty())
throw new EmptyCollectionException("deque");
return head.getElement();
}
public boolean isEmpty()
{
return (size == 0);
}
public int size()
{
return size;
}

public T getRear() throws EmptyCollectionException
{
if(isEmpty())
throw new EmptyCollectionException("deque");

return tail.getElement();
}

public void clear()
{
tail=null;
while(head != null)
{
T result=head.getElement();
head=head.getNext();
}
size=0;
}
public String toString()
{
String result = "";
LinearNode<T> current=head=tail;
while (current != null)
{
result = result += current.getElement() + "\n";
current = current.getNext();
}
return result;
}
}
public class LinearNode<T>
{
private LinearNode<T> next;
private T element;
public LinearNode()
{
next = null;
element = null;
}
public LinearNode(T elem)
{
next = null;
element = elem;
}
public LinearNode<T> getNext()
{
return next;
}
public void setNext(LinearNode<T> node)
{
next = node;
}
public T getElement()
{
return element;
}
public void setElement(T elem)
{
element = elem;
}
}
driver:
public class DequeDriver
{
public static void main(String[]args)
{
LinkedDeque deque= new LinkedDeque(6);
System.out.println("--Inserting an element at front of deque:
5--" );
deque.enqueueFront(5);
System.out.println(deque);
System.out.println("Size of the deque: "+ deque.size()+ "\nFirst
element: " + deque.getFront() + "\nLast element: " +
deque.getRear());



System.out.println();
//removing elements from deque
System.out.println("--Removing an element at rear of deque:
10--");
deque.dequeueRear();
System.out.println(deque);
System.out.println("Size of the deque: "+ deque.size()+ "\nFirst
element: " + deque.getFront() + "\nLast element: " +
deque.getRear());
System.out.println("\n");
System.out.println("--Removing an element at front of deque:
3--");
deque.dequeueFront();
System.out.println(deque);
System.out.println("Size of the deque: "+ deque.size()+ "\nFirst
element: " + deque.getFront() + "\nLast element: " +
deque.getRear());

System.out.println();
System.out.println("--Removing an element at rear of deque:
2--");
deque.dequeueRear();
System.out.println(deque);
System.out.println("Size of the deque: "+ deque.size()+ "\nFirst
element: " + deque.getFront() + "\nLast element: " +
deque.getRear());
System.out.println("\n");
System.out.println("--Removing an element at front of deque: 7--"
);
deque.dequeueFront();
System.out.println(deque);
System.out.println("Size of the deque: "+ deque.size()+ "\nFirst
element: " + deque.getFront() + "\nLast element: " +
deque.getRear());