java.util
Class Stack<E>

java.lang.Object
  java.util.Vector<E>
      java.util.Stack<E>

public class Stack<E>
extends Vector<E>

A LIFO stack of objects. TODO recycable

Field Summary

Fields inherited from class java.util.Vector

capacityIncrement, elementCount, elementData

Constructor Summary

Stack()
creates a new Stack instance

Method Summary

boolean	empty() is this stack empty?
E	peek() fetches an object from the stack does not remove it!
E	pop() fetches an object from the top of the stack and removes it
E	push(E anObject) pushes an object onto the stack
int	search(Object o)

Methods inherited from class java.util.Vector

addElement, capacity, clear, elementAt, elements, ensureCapacity, equals, indexOf, indexOf, insertElementAt, isEmpty, lastIndexOf, lastIndexOf, removeAllElements, removeElement, removeElementAt, setElementAt, setSize, size, toArray, toArray, toString, trimToSize

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Stack

public Stack()

creates a new Stack instance

Method Detail

push

public E push(E anObject)

pushes an object onto the stack

Parameters:

anObject - the object

Returns:

Object the object pushed onto the stack

pop

public E pop()

fetches an object from the top of the stack and removes it

Returns:

Object the object removed from the top of the stock

Throws:

EmptyStackException

peek

public E peek()

fetches an object from the stack
does not remove it!

Returns:

Object the object at the top of the stack

Throws:

EmptyStackException

empty

public boolean empty()

is this stack empty?

Returns:

boolean true, if the stack is empty

search

public int search(Object o)