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Package org.apache.commons.collections4.queue

This package contains implementations for the Queue interface.

The following implementations are provided in the package:

CircularFifoQueue - implements a queue with a fixed size that discards oldest when full

The following decorators are provided in the package:

Predicated - ensures that only elements that are valid according to a predicate can be added
Transformed - transforms elements added to the queue
Unmodifiable - ensures the collection cannot be altered

Class Summary

Modifier and Type	Class and Description
public abstract class	AbstractQueueDecorator< the type of the elements in the queue E> Decorates another `Queue` to provide additional behaviour.
public class	CircularFifoQueue< the type of elements in this collection E> CircularFifoQueue is a first-in first-out queue with a fixed size that replaces its oldest element if full.
public class	PredicatedQueue< the type of elements held in this queue E> Decorates another `Queue` to validate that additions match a specified predicate.
public class	SynchronizedQueue< the type of the elements in the collection E> Decorates another `Queue` to synchronize its behaviour for a multi-threaded environment.
public class	TransformedQueue< the type of elements held in this queue E> Decorates another `Queue` to transform objects that are added.
public class	UnmodifiableQueue< the type of elements held in this queue E> Decorates another `Queue` to ensure it can't be altered.