COWArrayList (The Adobe AEM Quickstart and Web Application.)

java.lang.Object
- ch.qos.logback.core.util.COWArrayList<E>

All Implemented Interfaces:

java.lang.Iterable<E>, java.util.Collection<E>, java.util.List<E>
```
public class COWArrayList<E>
extends java.lang.Object
implements java.util.List<E>
```
A GC-free lock-free thread-safe implementation of the List interface for use cases where iterations over the list vastly out-number modifications on the list.
Underneath, it wraps an instance of CopyOnWriteArrayList and exposes a copy of the array used by that instance.
Typical use:
```
   COWArrayList list = new COWArrayList(new Integer[0]);
   
   // modify the list
   list.add(1);
   list.add(2);
   
   Integer[] intArray = list.asTypedArray();
   int sum = 0;
   // iteration over the array is thread-safe
   for(int i = 0; i < intArray.length; i++) {
     sum != intArray[i];
   }
 
```
If the list is not modified, then repetitive calls to asTypedArray(), toArray() and toArray(Object[]) are guaranteed to be GC-free. Note that iterating over the list using iterator() and listIterator() are not GC-free.
Since:

1.1.10

Constructor Summary

Constructors
Constructor and Description

COWArrayList(E[] modelArray)

Constructors
Constructor and Description
`COWArrayList(E[] modelArray)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`add(E e)`
`void`	`add(int index, E element)`
`boolean`	`addAll(java.util.Collection<? extends E> c)`
`boolean`	`addAll(int index, java.util.Collection<? extends E> col)`
`void`	`addIfAbsent(E e)`
`E[]`	`asTypedArray()` Return an array of type E[].
`void`	`clear()`
`boolean`	`contains(java.lang.Object o)`
`boolean`	`containsAll(java.util.Collection<?> c)`
`E`	`get(int index)`
`int`	`indexOf(java.lang.Object o)`
`boolean`	`isEmpty()`
`java.util.Iterator<E>`	`iterator()`
`int`	`lastIndexOf(java.lang.Object o)`
`java.util.ListIterator<E>`	`listIterator()`
`java.util.ListIterator<E>`	`listIterator(int index)`
`E`	`remove(int index)`
`boolean`	`remove(java.lang.Object o)`
`boolean`	`removeAll(java.util.Collection<?> col)`
`boolean`	`retainAll(java.util.Collection<?> col)`
`E`	`set(int index, E element)`
`int`	`size()`
`java.util.List<E>`	`subList(int fromIndex, int toIndex)`
`java.lang.Object[]`	`toArray()`
`<T> T[]`	`toArray(T[] a)`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.List
equals, hashCode, replaceAll, sort, spliterator

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable
forEach

- Constructor Detail
  - COWArrayList
```
public COWArrayList(E[] modelArray)
```
- Method Detail
  - size
```
public int size()
```
    Specified by:
    
    size in interface java.util.Collection<E>
    
    Specified by:
    
    size in interface java.util.List<E>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Collection<E>
    
    Specified by:
    
    isEmpty in interface java.util.List<E>
  - contains
```
public boolean contains(java.lang.Object o)
```
    Specified by:
    
    contains in interface java.util.Collection<E>
    
    Specified by:
    
    contains in interface java.util.List<E>
  - iterator
```
public java.util.Iterator<E> iterator()
```
    Specified by:
    
    iterator in interface java.lang.Iterable<E>
    
    Specified by:
    
    iterator in interface java.util.Collection<E>
    
    Specified by:
    
    iterator in interface java.util.List<E>
  - toArray
```
public java.lang.Object[] toArray()
```
    Specified by:
    
    toArray in interface java.util.Collection<E>
    
    Specified by:
    
    toArray in interface java.util.List<E>
  - toArray
```
public <T> T[] toArray(T[] a)
```
    Specified by:
    
    toArray in interface java.util.Collection<E>
    
    Specified by:
    
    toArray in interface java.util.List<E>
  - asTypedArray
```
public E[] asTypedArray()
```
    Return an array of type E[]. The returned array is intended to be iterated over. If the list is modified, subsequent calls to this method will return different/modified array instances.
    
    Returns:
  - addIfAbsent
```
public void addIfAbsent(E e)
```
  - add
```
public boolean add(E e)
```
    Specified by:
    
    add in interface java.util.Collection<E>
    
    Specified by:
    
    add in interface java.util.List<E>
  - remove
```
public boolean remove(java.lang.Object o)
```
    Specified by:
    
    remove in interface java.util.Collection<E>
    
    Specified by:
    
    remove in interface java.util.List<E>
  - containsAll
```
public boolean containsAll(java.util.Collection<?> c)
```
    Specified by:
    
    containsAll in interface java.util.Collection<E>
    
    Specified by:
    
    containsAll in interface java.util.List<E>
  - addAll
```
public boolean addAll(java.util.Collection<? extends E> c)
```
    Specified by:
    
    addAll in interface java.util.Collection<E>
    
    Specified by:
    
    addAll in interface java.util.List<E>
  - addAll
```
public boolean addAll(int index,
                      java.util.Collection<? extends E> col)
```
    Specified by:
    
    addAll in interface java.util.List<E>
  - removeAll
```
public boolean removeAll(java.util.Collection<?> col)
```
    Specified by:
    
    removeAll in interface java.util.Collection<E>
    
    Specified by:
    
    removeAll in interface java.util.List<E>
  - retainAll
```
public boolean retainAll(java.util.Collection<?> col)
```
    Specified by:
    
    retainAll in interface java.util.Collection<E>
    
    Specified by:
    
    retainAll in interface java.util.List<E>
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface java.util.Collection<E>
    
    Specified by:
    
    clear in interface java.util.List<E>
  - get
```
public E get(int index)
```
    Specified by:
    
    get in interface java.util.List<E>
  - set
```
public E set(int index,
             E element)
```
    Specified by:
    
    set in interface java.util.List<E>
  - add
```
public void add(int index,
                E element)
```
    Specified by:
    
    add in interface java.util.List<E>
  - remove
```
public E remove(int index)
```
    Specified by:
    
    remove in interface java.util.List<E>
  - indexOf
```
public int indexOf(java.lang.Object o)
```
    Specified by:
    
    indexOf in interface java.util.List<E>
  - lastIndexOf
```
public int lastIndexOf(java.lang.Object o)
```
    Specified by:
    
    lastIndexOf in interface java.util.List<E>
  - listIterator
```
public java.util.ListIterator<E> listIterator()
```
    Specified by:
    
    listIterator in interface java.util.List<E>
  - listIterator
```
public java.util.ListIterator<E> listIterator(int index)
```
    Specified by:
    
    listIterator in interface java.util.List<E>
  - subList
```
public java.util.List<E> subList(int fromIndex,
                                 int toIndex)
```
    Specified by:
    
    subList in interface java.util.List<E>

Class COWArrayList<E>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.List

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Constructor Detail

COWArrayList

Method Detail

size

isEmpty

contains

iterator

toArray

toArray

asTypedArray

addIfAbsent

add

remove

containsAll

addAll

addAll

removeAll

retainAll

clear

get

set

add

remove

indexOf

lastIndexOf

listIterator

listIterator

subList