Class RotatingQueue<T>

java.lang.Object

java.util.AbstractCollection<T>

java.util.AbstractQueue<T>

org.assertj.core.presentation.RotatingQueue<T>

All Implemented Interfaces:

Iterable<T>, Collection<T>, Queue<T>

final class RotatingQueue<T>
extends AbstractQueue<T>

Queue with a fixed maximum size. When an element is added to a full queue, the oldest element is removed before the new element is added.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	capacity	The maximum number of elements that can be present.
private final Queue<T>	data	The array to provide a view of.

Constructor Summary

Constructors

Constructor	Description
RotatingQueue(int capacity)	Creates a new RotatingQueue.

Method Summary

Modifier and Type	Method	Description
Iterator<T>	iterator()
boolean	offer(T element)
T	peek()
T	poll()
int	size()

Methods inherited from class AbstractQueue

add, addAll, clear, element, remove

Methods inherited from class AbstractCollection

contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Collection

contains, containsAll, equals, hashCode, isEmpty, parallelStream, remove, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray

Methods inherited from interface Iterable

forEach

Field Details

data

private final Queue<T> data

The array to provide a view of.

capacity

private final int capacity

The maximum number of elements that can be present.

Constructor Details

RotatingQueue

RotatingQueue(int capacity)

Creates a new RotatingQueue.

Parameters:

capacity - the maximum number of elements the queue can hold

Throws:

IllegalArgumentException - if the capacity is negative

Method Details

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in class AbstractCollection<T>

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in class AbstractCollection<T>

offer

public boolean offer(T element)

poll

public T poll()

peek

public T peek()