com.adobe.internal.util

Interface Stack<T>

All Known Implementing Classes:

ArrayListStack

public interface Stack<T>

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	empty() Tests if stack is empty.
T	peek() Returns item from the top of the stack.
T	pop() Removes and returns item from the top of the stack.
T	push(T x) Adds an item to the top of the stack.
int	size() Returns the size of the stack.

Method Detail

push

T push(T x)

Adds an item to the top of the stack.

Parameters:

x - the item to add.

Returns:

the item added.

pop

T pop()

Removes and returns item from the top of the stack.

Returns:

the former top item.

Throws:

EmptyStackException - if stack is empty.

peek

T peek()

Returns item from the top of the stack.

Returns:

the top item.

Throws:

EmptyStackException - if stack is empty.

empty

boolean empty()

Tests if stack is empty.

Returns:

true if the stack is empty; false otherwise.

size

int size()

Returns the size of the stack.

Returns:

the size of the stack.

clear

void clear()