Urgently need Java Programmer to fix some coding

Cancelled

Job Description

Want someone urgently to complete small java based project that uses Queues and this has to be done in 1-2 hours only. Sorry for rush but 2 developers wasted the time and did nothing.
I have included instructions as well so look at it. here are some files available from link . They will help in compiling the programs
https://www.yousendit.com/download/WUJhWmdsT004aU5EZU1UQw

please get the details from the attachment and reply asap.

Here is some coding that you can look at

public interface Deque {
public boolean isEmpty( ) ;
// Return true if the deque is empty, false otherwise.

public boolean addFirst(Object item) ;
// Insert the item at the front of the deque. Returns false
// if the item cannot be added to the deque, true otherwise.

public boolean addLast(Object item) ;
// Insert the item at the back of the deque. Returns false if
// the item cannot be added to the deque, true otherwise.

public Object removeFirst( ) ;
// Delete and return the first item in the deque if the deque
// is not empty, otherwise return null ( the deque was empty) .

public Object removeLast( ) ;
// Delete and return the last item in the deque if the deque
// is not empty, otherwise return null ( the deque was empty) .

Thanks