java.util
Class Stack<E>

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

All Implemented Interfaces:

Serializable, Cloneable, Iterable<E>, Collection<E>, List<E>, RandomAccess

public class Stack<E>
extends Vector<E>

Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of objects. It enables users to pop and push onto the stack, including null objects. There is no limit to the size of the stack

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.Vector

capacityIncrement, elementCount, elementData

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Stack()
Constructs a stack with the default size of Vector.

Method Summary

boolean	empty() Determines if the stack is empty or not.
E	peek() Returns the element at the top of the stack without removing it.
E	pop() Returns the element at the top of the stack and removes it.
E	push(E object) Pushes the object from the parameter onto the top of the stack.
int	search(Object o) Returns the index of the first occurrence of the object.

Methods inherited from class java.util.Vector

add, add, addAll, addAll, addElement, capacity, clear, clone, contains, containsAll, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, get, hashCode, indexOf, indexOf, insertElementAt, isEmpty, lastElement, lastIndexOf, lastIndexOf, remove, remove, removeAll, removeAllElements, removeElement, removeElementAt, removeRange, retainAll, set, setElementAt, setSize, size, subList, toArray, toArray, toString, trimToSize

Methods inherited from class java.util.AbstractList

iterator, listIterator, listIterator

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

iterator, listIterator, listIterator

Constructor Detail

Stack

public Stack()

Constructs a stack with the default size of Vector.

Method Detail

empty

public boolean empty()

Determines if the stack is empty or not.

Returns:

true if the stack is empty, false otherwise

peek

public E peek()

Returns the element at the top of the stack without removing it.

Returns:

the element at the top of the Stack

Throws:

EmptyStackException - when empty() is true

See Also:

pop()

pop

public E pop()

Returns the element at the top of the stack and removes it.

Returns:

the element at the top of the stack.

Throws:

EmptyStackException - when empty() is true

See Also:

peek(), push(E)

push

public E push(E object)

Pushes the object from the parameter onto the top of the stack.

Parameters:

object - The object to be added to the stack

Returns:

the object argument

See Also:

peek(), pop()

search

public int search(Object o)

Returns the index of the first occurrence of the object.

Parameters:

o - the object to be searched

Returns:

the index of the first occurrence of the object