Question Discussion & Solution

public void push(Object item)
{
	Node temp = new Node(item,first);
	first = temp;
	size++;
}

public void push(Object item)
{
	Node temp = new Node(item,first);
	first = temp.getNext();
	size++;
}

public void push(Object item)
{
	Node temp = new Node();
	first = temp.getNext();
	first.setItem(item);
	size++;
}

public void push(Object item)
{
	Node temp = new Node();
	first = temp.getNext.getNext();
	first.setItem(item);
	size++;
}

public boolean empty()
{
     return q2.isEmpty();
}

public boolean empty() 
{
     return q1.isEmpty() || q2.isEmpty();
}

public boolean empty() 
{
     return q1.isEmpty();
}

public boolean empty() 
{
     return q1.isEmpty() & q2.isEmpty();
}