public boolean enQueue( int data )
    {
        Entry o = new Entry(data, head.next);
        head.next = o;
        size++;
        
        return true;
    }
public boolean enQueue ( int data ) { Entry o = new Entry ( data , head . next ) ; head . next = o ; size ++ ; return true ; }
add a new item to the queue

@param    data
@return    boolean