Class ImmutableList<E>
- java.lang.Object
-
- java.util.AbstractCollection<E>
-
- com.google.common.collect.ImmutableCollection<E>
-
- com.google.common.collect.ImmutableList<E>
-
- All Implemented Interfaces:
Serializable,Iterable<E>,Collection<E>,List<E>,RandomAccess
@GwtCompatible(serializable=true, emulated=true) public abstract class ImmutableList<E> extends ImmutableCollection<E> implements List<E>, RandomAccess
A high-performance, immutable, random-accessListimplementation. Does not permit null elements.Unlike
Collections#unmodifiableList, which is a view of a separate collection that can still change, an instance ofImmutableListcontains its own private data and will never change.ImmutableListis convenient forpublic static finallists ("constant lists") and also lets you easily make a "defensive copy" of a list provided to your class by a caller.Note: Although this class is not final, it cannot be subclassed as it has no public or protected constructors. Thus, instances of this type are guaranteed to be immutable.
See the Guava User Guide article on immutable collections.
- Since:
- 2.0 (imported from Google Collections Library)
- See Also:
ImmutableMap,ImmutableSet, Serialized Form
-
-
Nested Class Summary
Nested Classes Modifier and Type Class Description static classImmutableList.Builder<E>A builder for creating immutable list instances, especiallypublic static finallists ("constant lists").
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description voidadd(int index, E element)Deprecated.Unsupported operation.booleanaddAll(int index, Collection<? extends E> newElements)Deprecated.Unsupported operation.ImmutableList<E>asList()Returns this list instance.static <E> ImmutableList.Builder<E>builder()Returns a new builder.booleancontains(Object object)static <E> ImmutableList<E>copyOf(E[] elements)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>copyOf(Iterable<? extends E> elements)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>copyOf(Collection<? extends E> elements)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>copyOf(Iterator<? extends E> elements)Returns an immutable list containing the given elements, in order.booleanequals(Object obj)inthashCode()intindexOf(Object object)UnmodifiableIterator<E>iterator()Returns an unmodifiable iterator across the elements in this collection.intlastIndexOf(Object object)UnmodifiableListIterator<E>listIterator()UnmodifiableListIterator<E>listIterator(int index)static <E> ImmutableList<E>of()Returns the empty immutable list.static <E> ImmutableList<E>of(E element)Returns an immutable list containing a single element.static <E> ImmutableList<E>of(E e1, E e2)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6, E e7)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10, E e11)Returns an immutable list containing the given elements, in order.static <E> ImmutableList<E>of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10, E e11, E e12, E... others)Returns an immutable list containing the given elements, in order.Eremove(int index)Deprecated.Unsupported operation.ImmutableList<E>reverse()Returns a view of this immutable list in reverse order.Eset(int index, E element)Deprecated.Unsupported operation.ImmutableList<E>subList(int fromIndex, int toIndex)Returns an immutable list of the elements between the specifiedfromIndex, inclusive, andtoIndex, exclusive.-
Methods inherited from class com.google.common.collect.ImmutableCollection
add, addAll, clear, remove, removeAll, retainAll, toArray, toArray
-
Methods inherited from class java.util.AbstractCollection
containsAll, isEmpty, size, toString
-
Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream, toArray
-
-
-
-
Method Detail
-
of
public static <E> ImmutableList<E> of()
Returns the empty immutable list. This set behaves and performs comparably toCollections#emptyList, and is preferable mainly for consistency and maintainability of your code.
-
of
public static <E> ImmutableList<E> of(E element)
Returns an immutable list containing a single element. This list behaves and performs comparably toCollections#singleton, but will not accept a null element. It is preferable mainly for consistency and maintainability of your code.- Throws:
NullPointerException- ifelementis null
-
of
public static <E> ImmutableList<E> of(E e1, E e2)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10, E e11)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null
-
of
public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10, E e11, E e12, E... others)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any element is null- Since:
- 3.0 (source-compatible since 2.0)
-
copyOf
public static <E> ImmutableList<E> copyOf(Iterable<? extends E> elements)
Returns an immutable list containing the given elements, in order. Ifelementsis aCollection, this method behaves exactly ascopyOf(Collection); otherwise, it behaves exactly ascopyOf(elements.iterator().- Throws:
NullPointerException- if any ofelementsis null
-
copyOf
public static <E> ImmutableList<E> copyOf(Collection<? extends E> elements)
Returns an immutable list containing the given elements, in order.Despite the method name, this method attempts to avoid actually copying the data when it is safe to do so. The exact circumstances under which a copy will or will not be performed are undocumented and subject to change.
Note that if
listis aList<String>, thenImmutableList.copyOf(list)returns anImmutableList<String>containing each of the strings inlist, while ImmutableList.of(list)} returns anImmutableList<List<String>>containing one element (the given list itself).This method is safe to use even when
elementsis a synchronized or concurrent collection that is currently being modified by another thread.- Throws:
NullPointerException- if any ofelementsis null
-
copyOf
public static <E> ImmutableList<E> copyOf(Iterator<? extends E> elements)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any ofelementsis null
-
copyOf
public static <E> ImmutableList<E> copyOf(E[] elements)
Returns an immutable list containing the given elements, in order.- Throws:
NullPointerException- if any ofelementsis null- Since:
- 3.0
-
iterator
public UnmodifiableIterator<E> iterator()
Description copied from class:ImmutableCollectionReturns an unmodifiable iterator across the elements in this collection.
-
listIterator
public UnmodifiableListIterator<E> listIterator()
- Specified by:
listIteratorin interfaceList<E>
-
listIterator
public UnmodifiableListIterator<E> listIterator(int index)
- Specified by:
listIteratorin interfaceList<E>
-
lastIndexOf
public int lastIndexOf(@Nullable Object object)
- Specified by:
lastIndexOfin interfaceList<E>
-
contains
public boolean contains(@Nullable Object object)
- Specified by:
containsin interfaceCollection<E>- Specified by:
containsin interfaceList<E>- Overrides:
containsin classImmutableCollection<E>
-
subList
public ImmutableList<E> subList(int fromIndex, int toIndex)
Returns an immutable list of the elements between the specifiedfromIndex, inclusive, andtoIndex, exclusive. (IffromIndexandtoIndexare equal, the empty immutable list is returned.)
-
addAll
@Deprecated public final boolean addAll(int index, Collection<? extends E> newElements)
Deprecated.Unsupported operation.Guaranteed to throw an exception and leave the list unmodified.- Specified by:
addAllin interfaceList<E>- Throws:
UnsupportedOperationException- always
-
set
@Deprecated public final E set(int index, E element)
Deprecated.Unsupported operation.Guaranteed to throw an exception and leave the list unmodified.- Specified by:
setin interfaceList<E>- Throws:
UnsupportedOperationException- always
-
add
@Deprecated public final void add(int index, E element)
Deprecated.Unsupported operation.Guaranteed to throw an exception and leave the list unmodified.- Specified by:
addin interfaceList<E>- Throws:
UnsupportedOperationException- always
-
remove
@Deprecated public final E remove(int index)
Deprecated.Unsupported operation.Guaranteed to throw an exception and leave the list unmodified.- Specified by:
removein interfaceList<E>- Throws:
UnsupportedOperationException- always
-
asList
public final ImmutableList<E> asList()
Returns this list instance.- Overrides:
asListin classImmutableCollection<E>- Since:
- 2.0
-
reverse
public ImmutableList<E> reverse()
Returns a view of this immutable list in reverse order. For example,ImmutableList.of(1, 2, 3).reverse()is equivalent toImmutableList.of(3, 2, 1).- Returns:
- a view of this immutable list in reverse order
- Since:
- 7.0
-
hashCode
public int hashCode()
-
builder
public static <E> ImmutableList.Builder<E> builder()
Returns a new builder. The generated builder is equivalent to the builder created by theImmutableList.Builderconstructor.
-
-