Interface Queue<E>

All Known Implementing Classes:

AbstractQueue, ArrayQueue, LinkedListQueue

public interface Queue<E>

Interface to define an abstract queue

Author:

Barb Ericson

Method Summary

boolean	isEmpty() Method to see if the queue is empty
E	peek() Peek at, but don't remove, the head of the queue
E	pop() Pop an object from the Queue
void	push(E element) Push an element onto the tail of the Queue
int	size() Return the size of a queue

Method Detail

push

void push(E element)

Push an element onto the tail of the Queue

Parameters:

element - the element to add to the queue

peek

E peek()

Peek at, but don't remove, the head of the queue

Returns:

the head of the queue (top)

pop

E pop()

Pop an object from the Queue

Returns:

the head (top) of the queue and remove it from the queue

size

int size()

Return the size of a queue

Returns:

the number of elements in the queue

isEmpty

boolean isEmpty()

Method to see if the queue is empty

Returns:

true if the queue is empty, else false