org.joone.engine

Class Fifo

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.Vector

org.joone.engine.Fifo

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.List, java.util.RandomAccess

public class Fifo
extends java.util.Vector

The Fifo class represents a first-in-first-out (FIFO) stack of objects.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Fifo()

Method Summary

Modifier and Type	Method and Description
boolean	empty() Tests if this stack is empty.
java.lang.Object	peek() Looks at the object at the top of this stack without removing it from the stack.
java.lang.Object	pop() Removes the object at the top of this stack and returns that object as the value of this function.
java.lang.Object	push(java.lang.Object item) Pushes an item onto the top of this stack.
int	search(java.lang.Object o) Returns where an object is on this stack.

Methods inherited from class java.util.Vector

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, stream

Constructor Detail

Fifo

public Fifo()

Method Detail

empty

public boolean empty()

Tests if this stack is empty.

Returns:

true if this stack is empty; false otherwise.

peek

public java.lang.Object peek()

Looks at the object at the top of this stack without removing it from the stack.

Returns:

the object at the top of this stack.

Throws:

EmptyStackException - if this stack is empty.

pop

public java.lang.Object pop()

Removes the object at the top of this stack and returns that object as the value of this function.

Returns:

The object at the top of this stack.

Throws:

EmptyStackException - if this stack is empty.

push

public java.lang.Object push(java.lang.Object item)

Pushes an item onto the top of this stack.

Parameters:

item - the item to be pushed onto this stack.

Returns:

the item argument.

search

public int search(java.lang.Object o)

Returns where an object is on this stack.

Parameters:

o - the desired object.

Returns:

the distance from the top of the stack where the object is] located; the return value -1 indicates that the object is not on the stack.