de.weltraumschaf.commons.concurrent

Interface Stack<E>

Type Parameters:

E - type of stack entries

All Known Implementing Classes:

ConcurrentStack

@ThreadSafe
public interface Stack<E>

Interface for a stack (LIFO).

Since:

1.0.0

Author:

Sven Strittmatter <weltraumschaf@googlemail.com>

Method Summary

Modifier and Type	Method and Description
boolean	isEmpty() Check if stack is empty.
E	peek() Returns the top element of stack w/o remove it.
E	pop() Returns the top element of stack and removes it.
void	push(E element) Push entry on top of the stack.

Method Detail

isEmpty

boolean isEmpty()

Check if stack is empty.

Returns:

true if empty; else false

peek

E peek()

Returns the top element of stack w/o remove it.

Returns:

top element, null if stack is empty

pop

E pop()

Returns the top element of stack and removes it.

Returns:

top element, null if stack is empty

push

void push(E element)

Push entry on top of the stack.

Parameters:

element - pushed entry