Interface Stack<T>

All Known Implementing Classes:

CarlStack

public interface Stack<T>

An interface for the Stack ADT, adapted from Frank Carrano.

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all items from the stack.
boolean	isEmpty() Returns whether the stack is empty.
T	peek() Returns the item on top of the stack, without removing it.
T	pop() Removes and returns the item from the top of this stack.
void	push(T item) Adds an item to the top of this stack.

Method Detail

push

void push(T item)

Adds an item to the top of this stack.

Parameters:

item - The item to add.

pop

T pop()

Removes and returns the item from the top of this stack.

Returns:

The item at the top of the stack.

Throws:

java.util.EmptyStackException - if stack is empty.

peek

T peek()

Returns the item on top of the stack, without removing it.

Returns:

The item at the top of the stack.

Throws:

java.util.EmptyStackException - if stack is empty.

isEmpty

boolean isEmpty()

Returns whether the stack is empty.

Returns:

True if the stack is empty; false otherwise.

clear

void clear()

Removes all items from the stack.