CheckedArrayList (Geotools modules 21.0 API)

Object
- AbstractCollection<E>
- - AbstractList<E>
  - - ArrayList<E>
    - - CheckedArrayList<E>

Type Parameters:

E - The type of elements in the list.

All Implemented Interfaces:

Serializable, Cloneable, Iterable<E>, Collection<E>, List<E>, RandomAccess, CheckedCollection<E>

Direct Known Subclasses:

XPathUtil.StepList
```
public class CheckedArrayList<E>
extends ArrayList<E>
implements CheckedCollection<E>, Cloneable
```
A checked and synchronized List. Type checks are performed at run-time in addition of compile-time checks. The synchronization lock can be modified at runtime by overriding the getLock() method.
This class is similar to using the wrappers provided in Collections, minus the cost of indirection levels and with the addition of overrideable methods.

Since:

2.1

Author:

Jody Garnett (Refractions Research), Martin Desruisseaux (IRD)

See Also:

Collections.checkedList(java.util.List<E>, java.lang.Class<E>), Collections.synchronizedList(java.util.List<T>), Serialized Form

Field Summary
- Fields inherited from class AbstractList
  modCount

Constructor Summary

Constructors
Constructor and Description
`CheckedArrayList(Class<E> type)` Constructs a list of the specified type.
`CheckedArrayList(Class<E> type, int capacity)` Constructs a list of the specified type and initial capacity.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`add(E element)` Appends the specified element to the end of this list.
`void`	`add(int index, E element)` Inserts the specified element at the specified position in this list.
`boolean`	`addAll(Collection<? extends E> collection)` Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified Collection's Iterator.
`boolean`	`addAll(int index, Collection<? extends E> collection)` Inserts all of the elements in the specified collection into this list, starting at the specified position.
`protected void`	`checkWritePermission()` Checks if changes in this collection are allowed.
`void`	`clear()` Removes all of the elements from this list.
`CheckedArrayList<E>`	`clone()` Returns a shallow copy of this list.
`boolean`	`contains(Object o)` Returns `true` if this list contains the specified element.
`void`	`ensureCapacity(int minCapacity)` Increases the capacity, if necessary, to ensure that it can hold the given number of elements.
`protected void`	`ensureValidType(E element)` Checks the type of the specified object.
`boolean`	`equals(Object o)` Compares the specified object with this list for equality.
`E`	`get(int index)` Returns the element at the specified position in this list.
`Class<E>`	`getElementType()` Returns the element type given at construction time.
`protected Object`	`getLock()` Returns the synchronization lock.
`int`	`hashCode()` Returns the hash code value for this list.
`int`	`indexOf(Object o)` Returns the index of the first occurrence of the specified element in this list, or -1 if none.
`boolean`	`isEmpty()` Returns `true` if this list contains no elements.
`Iterator<E>`	`iterator()` Returns an iterator over the elements in this list.
`int`	`lastIndexOf(Object o)` Returns the index of the last occurrence of the specified element in this list, or -1 if none.
`E`	`remove(int index)` Removes the element at the specified position in this list.
`boolean`	`remove(Object o)` Removes the first occurrence of the specified element from this list.
`boolean`	`removeAll(Collection<?> c)` Removes all of this list's elements that are also contained in the specified collection.
`boolean`	`retainAll(Collection<?> c)` Retains only the elements in this list that are contained in the specified collection.
`E`	`set(int index, E element)` Replaces the element at the specified position in this list with the specified element.
`int`	`size()` Returns the number of elements in this list.
`Object[]`	`toArray()` Returns an array containing all of the elements in this list.
`<T> T[]`	`toArray(T[] a)` Returns an array containing all of the elements in this list in proper sequence.
`String`	`toString()` Returns a string representation of this list.
`void`	`trimToSize()` Trims the capacity to the list's current size.

Methods inherited from class ArrayList
forEach, listIterator, listIterator, removeIf, removeRange, replaceAll, sort, spliterator, subList

Methods inherited from class AbstractCollection
containsAll

Methods inherited from class Object
finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Collection
containsAll, parallelStream, removeIf, spliterator, stream

Methods inherited from interface Iterable
forEach

Methods inherited from interface List
containsAll

- Constructor Detail
  - CheckedArrayList
```
public CheckedArrayList(Class<E> type)
```
    Constructs a list of the specified type.
    
    Parameters:
    
    type - The element type (should not be null).
  - CheckedArrayList
```
public CheckedArrayList(Class<E> type,
                        int capacity)
```
    Constructs a list of the specified type and initial capacity.
    
    Parameters:
    
    type - The element type (should not be null).
    
    capacity - The initial capacity.
    
    Since:
    
    2.4
- Method Detail
  - getElementType
```
public Class<E> getElementType()
```
    Returns the element type given at construction time.
    
    Specified by:
    
    getElementType in interface CheckedCollection<E>
    
    Returns:
    
    The element type.
    
    Since:
    
    2.4
  - ensureValidType
```
protected void ensureValidType(E element)
                        throws IllegalArgumentException
```
    Checks the type of the specified object. The default implementation ensure that the object is assignable to the type specified at construction time.
    
    Parameters:
    
    element - the object to check, or null.
    
    Throws:
    
    IllegalArgumentException - if the specified element is not of the expected type.
  - checkWritePermission
```
protected void checkWritePermission()
                             throws UnsupportedOperationException
```
    Checks if changes in this collection are allowed. This method is automatically invoked after this collection got the lock and before any operation that may change the content. The default implementation does nothing (i.e. this collection is modifiable). Subclasses should override this method if they want to control write access.
    
    Throws:
    
    UnsupportedOperationException - if this collection is unmodifiable.
    
    Since:
    
    2.5
  - getLock
```
protected Object getLock()
```
    Returns the synchronization lock. The default implementation returns this. Subclasses that override this method should be careful to update the lock reference when this list is cloned.
    
    Returns:
    
    The synchronization lock.
    
    Since:
    
    2.5
  - iterator
```
public Iterator<E> iterator()
```
    Returns an iterator over the elements in this list.
    
    Specified by:
    
    iterator in interface Iterable<E>
    
    Specified by:
    
    iterator in interface Collection<E>
    
    Specified by:
    
    iterator in interface List<E>
    
    Overrides:
    
    iterator in class ArrayList<E>
  - size
```
public int size()
```
    Returns the number of elements in this list.
    
    Specified by:
    
    size in interface Collection<E>
    
    Specified by:
    
    size in interface List<E>
    
    Overrides:
    
    size in class ArrayList<E>
  - isEmpty
```
public boolean isEmpty()
```
    Returns true if this list contains no elements.
    
    Specified by:
    
    isEmpty in interface Collection<E>
    
    Specified by:
    
    isEmpty in interface List<E>
    
    Overrides:
    
    isEmpty in class ArrayList<E>
  - contains
```
public boolean contains(Object o)
```
    Returns true if this list contains the specified element.
    
    Specified by:
    
    contains in interface Collection<E>
    
    Specified by:
    
    contains in interface List<E>
    
    Overrides:
    
    contains in class ArrayList<E>
  - indexOf
```
public int indexOf(Object o)
```
    Returns the index of the first occurrence of the specified element in this list, or -1 if none.
    
    Specified by:
    
    indexOf in interface List<E>
    
    Overrides:
    
    indexOf in class ArrayList<E>
  - lastIndexOf
```
public int lastIndexOf(Object o)
```
    Returns the index of the last occurrence of the specified element in this list, or -1 if none.
    
    Specified by:
    
    lastIndexOf in interface List<E>
    
    Overrides:
    
    lastIndexOf in class ArrayList<E>
  - get
```
public E get(int index)
```
    Returns the element at the specified position in this list.
    
    Specified by:
    
    get in interface List<E>
    
    Overrides:
    
    get in class ArrayList<E>
  - set
```
public E set(int index,
             E element)
      throws IllegalArgumentException,
             UnsupportedOperationException
```
    Replaces the element at the specified position in this list with the specified element.
    
    Specified by:
    
    set in interface List<E>
    
    Overrides:
    
    set in class ArrayList<E>
    
    Parameters:
    
    index - index of element to replace.
    
    element - element to be stored at the specified position.
    
    Returns:
    
    the element previously at the specified position.
    
    Throws:
    
    IndexOutOfBoundsException - if index out of range.
    
    IllegalArgumentException - if the specified element is not of the expected type.
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - add
```
public boolean add(E element)
            throws IllegalArgumentException,
                   UnsupportedOperationException
```
    Appends the specified element to the end of this list.
    
    Specified by:
    
    add in interface Collection<E>
    
    Specified by:
    
    add in interface List<E>
    
    Overrides:
    
    add in class ArrayList<E>
    
    Parameters:
    
    element - element to be appended to this list.
    
    Returns:
    
    always true.
    
    Throws:
    
    IllegalArgumentException - if the specified element is not of the expected type.
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - add
```
public void add(int index,
                E element)
         throws IllegalArgumentException,
                UnsupportedOperationException
```
    Inserts the specified element at the specified position in this list.
    
    Specified by:
    
    add in interface List<E>
    
    Overrides:
    
    add in class ArrayList<E>
    
    Parameters:
    
    index - index at which the specified element is to be inserted.
    
    element - element to be inserted.
    
    Throws:
    
    IndexOutOfBoundsException - if index out of range.
    
    IllegalArgumentException - if the specified element is not of the expected type.
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - addAll
```
public boolean addAll(Collection<? extends E> collection)
               throws IllegalArgumentException,
                      UnsupportedOperationException
```
    Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified Collection's Iterator.
    
    Specified by:
    
    addAll in interface Collection<E>
    
    Specified by:
    
    addAll in interface List<E>
    
    Overrides:
    
    addAll in class ArrayList<E>
    
    Parameters:
    
    collection - the elements to be inserted into this list.
    
    Returns:
    
    true if this list changed as a result of the call.
    
    Throws:
    
    IllegalArgumentException - if at least one element is not of the expected type.
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - addAll
```
public boolean addAll(int index,
                      Collection<? extends E> collection)
               throws IllegalArgumentException,
                      UnsupportedOperationException
```
    Inserts all of the elements in the specified collection into this list, starting at the specified position.
    
    Specified by:
    
    addAll in interface List<E>
    
    Overrides:
    
    addAll in class ArrayList<E>
    
    Parameters:
    
    index - index at which to insert first element fromm the specified collection.
    
    collection - elements to be inserted into this list.
    
    Returns:
    
    true if this list changed as a result of the call.
    
    Throws:
    
    IllegalArgumentException - if at least one element is not of the expected type.
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - remove
```
public E remove(int index)
         throws UnsupportedOperationException
```
    Removes the element at the specified position in this list.
    
    Specified by:
    
    remove in interface List<E>
    
    Overrides:
    
    remove in class ArrayList<E>
    
    Throws:
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - remove
```
public boolean remove(Object o)
               throws UnsupportedOperationException
```
    Removes the first occurrence of the specified element from this list.
    
    Specified by:
    
    remove in interface Collection<E>
    
    Specified by:
    
    remove in interface List<E>
    
    Overrides:
    
    remove in class ArrayList<E>
    
    Throws:
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - removeAll
```
public boolean removeAll(Collection<?> c)
                  throws UnsupportedOperationException
```
    Removes all of this list's elements that are also contained in the specified collection.
    
    Specified by:
    
    removeAll in interface Collection<E>
    
    Specified by:
    
    removeAll in interface List<E>
    
    Overrides:
    
    removeAll in class ArrayList<E>
    
    Throws:
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - retainAll
```
public boolean retainAll(Collection<?> c)
                  throws UnsupportedOperationException
```
    Retains only the elements in this list that are contained in the specified collection.
    
    Specified by:
    
    retainAll in interface Collection<E>
    
    Specified by:
    
    retainAll in interface List<E>
    
    Overrides:
    
    retainAll in class ArrayList<E>
    
    Throws:
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - trimToSize
```
public void trimToSize()
```
    Trims the capacity to the list's current size.
    
    Overrides:
    
    trimToSize in class ArrayList<E>
  - ensureCapacity
```
public void ensureCapacity(int minCapacity)
```
    Increases the capacity, if necessary, to ensure that it can hold the given number of elements.
    
    Overrides:
    
    ensureCapacity in class ArrayList<E>
  - clear
```
public void clear()
           throws UnsupportedOperationException
```
    Removes all of the elements from this list.
    
    Specified by:
    
    clear in interface Collection<E>
    
    Specified by:
    
    clear in interface List<E>
    
    Overrides:
    
    clear in class ArrayList<E>
    
    Throws:
    
    UnsupportedOperationException - if this collection is unmodifiable.
  - toArray
```
public Object[] toArray()
```
    Returns an array containing all of the elements in this list.
    
    Specified by:
    
    toArray in interface Collection<E>
    
    Specified by:
    
    toArray in interface List<E>
    
    Overrides:
    
    toArray in class ArrayList<E>
  - toArray
```
public <T> T[] toArray(T[] a)
```
    Returns an array containing all of the elements in this list in proper sequence.
    
    Specified by:
    
    toArray in interface Collection<E>
    
    Specified by:
    
    toArray in interface List<E>
    
    Overrides:
    
    toArray in class ArrayList<E>
    
    Type Parameters:
    
    T - The type of array elements.
  - toString
```
public String toString()
```
    Returns a string representation of this list.
    
    Overrides:
    
    toString in class AbstractCollection<E>
  - equals
```
public boolean equals(Object o)
```
    Compares the specified object with this list for equality.
    
    Specified by:
    
    equals in interface Collection<E>
    
    Specified by:
    
    equals in interface List<E>
    
    Overrides:
    
    equals in class AbstractList<E>
  - hashCode
```
public int hashCode()
```
    Returns the hash code value for this list.
    
    Specified by:
    
    hashCode in interface Collection<E>
    
    Specified by:
    
    hashCode in interface List<E>
    
    Overrides:
    
    hashCode in class AbstractList<E>
  - clone
```
public CheckedArrayList<E> clone()
```
    Returns a shallow copy of this list.
    
    Overrides:
    
    clone in class ArrayList<E>
    
    Returns:
    
    A shallow copy of this list.
    
    See Also:
    
    Object.clone()

Class CheckedArrayList<E>

Field Summary

Fields inherited from class AbstractList

Constructor Summary

Method Summary

Methods inherited from class ArrayList

Methods inherited from class AbstractCollection

Methods inherited from class Object

Methods inherited from interface Collection

Methods inherited from interface Iterable

Methods inherited from interface List

Constructor Detail

CheckedArrayList

CheckedArrayList

Method Detail

getElementType

ensureValidType

checkWritePermission

getLock

iterator

size

isEmpty

contains

indexOf

lastIndexOf

get

set

add

add

addAll

addAll

remove

remove

removeAll

retainAll

trimToSize

ensureCapacity

clear

toArray

toArray

toString

equals

hashCode

clone