Package org.apache.ofbiz.base.util.collections

Class LifoSet<V>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<V>

org.apache.ofbiz.base.util.collections.LifoSet<V>

All Implemented Interfaces:

Serializable, Iterable<V>, Collection<V>, Set<V>

public class LifoSet<V>
extends AbstractSet<V>
implements Serializable

LifoSet - Set interface wrapper around a LinkedList

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
LifoSet()	Constructs a set containing the elements of the specified collection, in the order they are returned by the collection's iterator.
LifoSet(int capacity)	Constructs a set containing the elements of the specified collection, in the order they are returned by the collection's iterator.

Method Summary

Modifier and Type	Method	Description
boolean	add(V obj)
boolean	empty()
Iterator<V>	iterator()
V	peek()
V	pop()
void	push(V item)
int	search(Object item)
void	setCapactity(int capacity)	Sets the max capacity for this LifoSet
int	size()

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, clear, contains, containsAll, isEmpty, remove, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

addAll, clear, contains, containsAll, isEmpty, remove, retainAll, spliterator, toArray, toArray

Constructor Details

LifoSet

public LifoSet()

Constructs a set containing the elements of the specified collection, in the order they are returned by the collection's iterator.

LifoSet

public LifoSet(int capacity)

Constructs a set containing the elements of the specified collection, in the order they are returned by the collection's iterator.

Parameters:

capacity - the collection whose elements are to be placed into this set.

Method Details

setCapactity

public void setCapactity(int capacity)

Sets the max capacity for this LifoSet

Parameters:

capacity - Max Size (as integer)

size

public int size()

Specified by:

size in interface Collection<V>

Specified by:

size in interface Set<V>

Specified by:

size in class AbstractCollection<V>

See Also:

• Collection.size()

add

public boolean add(V obj)

Specified by:

add in interface Collection<V>

Specified by:

add in interface Set<V>

Overrides:

add in class AbstractCollection<V>

See Also:

• Collection.add(java.lang.Object)

iterator

public Iterator<V> iterator()

Specified by:

iterator in interface Collection<V>

Specified by:

iterator in interface Iterable<V>

Specified by:

iterator in interface Set<V>

Specified by:

iterator in class AbstractCollection<V>

See Also:

• Collection.iterator()

empty

public boolean empty()

Returns:

true if and only if this stack contains no items; false otherwise

See Also:

• Stack.empty()

push

public void push(V item)

Parameters:

item - The item to be pushed onto this stack

See Also:

• Stack.push(java.lang.Object)

pop

public V pop()
      throws EmptyStackException

Returns:

The object at the top of this stack

Throws:

EmptyStackException - If this stack is empty

See Also:

• Stack.pop()

peek

public V peek()
       throws EmptyStackException

Returns:

The object at the top of this stack

Throws:

EmptyStackException - If this stack is empty

See Also:

• Stack.peek()

search

public int search(Object item)

Parameters:

item - The desired object

Returns:

The 1-based position from the top of the stack where the object is located; the return value -1 indicates that the object is not on the stack

See Also:

• Stack.search(java.lang.Object)