Class Stack

java.lang.Object
  |
  +--Stack

public class Stack

extends java.lang.Object

Constructor Summary

Stack()
Constructs a new stack object, initializing the stack to be empty

Method Summary

boolean	isEmpty() Tells whether or not the stack is empty
Object	peek() Returns the top element on the stack to the calling application, but does not remove it.
Object	pop() Pops the top element off of the stack and returns it to the calling application.
void	push(Object item) Adds the given item to the top of the stack

Methods inherited from class java.lang.Object

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

Constructor Detail

Stack

public Stack()

Constructs a new stack object, initializing the stack to be empty

Method Detail

push

public void push(Object item)

Adds the given item to the top of the stack

Parameters:

item - The item to be added to the stack

isEmpty

public boolean isEmpty()

Tells whether or not the stack is empty

Returns:

True if the stack is empty, false if the stack is not empty.

peek

public Object peek()
           throws java.util.EmptyStackException

Returns the top element on the stack to the calling application, but does not remove it. Throws exception if the stack is empty

Returns:

The item that is the top element on the stack

pop

public Object pop()
          throws java.util.EmptyStackException

Pops the top element off of the stack and returns it to the calling application. Throws exception if stack is empty.

Returns:

The item that was the top element on the stack