Package com.google.common.collect

Class ForwardingList<E>

  • All Implemented Interfaces:
    java.lang.Iterable<E>, java.util.Collection<E>, java.util.List<E>
    @GwtCompatible
public abstract class ForwardingList<E>
extends ForwardingCollection<E>
implements java.util.List<E>
    A list which forwards all its method calls to another list. Subclasses should override one or more methods to modify the behavior of the backing list as desired per the decorator pattern.

    This class does not implement RandomAccess. If the delegate supports random access, the ForwardingList subclass should implement the RandomAccess interface.

    Warning: The methods of ForwardingList forward indiscriminately to the methods of the delegate. For example, overriding add(int, E) alone will not change the behavior of addAll(int, java.util.Collection<? extends E>), which can lead to unexpected behavior. In this case, you should override addAll as well, either providing your own implementation, or delegating to the provided standardAddAll method.

    The standard methods and any collection views they return are not guaranteed to be thread-safe, even when all of the methods that they depend on are thread-safe.

    Since:
    2.0 (imported from Google Collections Library)

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(int index, E element)  
      boolean addAll​(int index, java.util.Collection<? extends E> elements)  
      boolean equals​(java.lang.Object object)  
      E get​(int index)  
      int hashCode()  
      int indexOf​(java.lang.Object element)  
      int lastIndexOf​(java.lang.Object element)  
      java.util.ListIterator<E> listIterator()  
      java.util.ListIterator<E> listIterator​(int index)  
      E remove​(int index)  
      E set​(int index, E element)  
      java.util.List<E> subList​(int fromIndex, int toIndex)  

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.List

        add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, replaceAll, retainAll, size, sort, spliterator, toArray, toArray

    • Method Detail

      • add

        public void add​(int index,
                E element)
        Specified by:
        add in interface java.util.List<E>

      • addAll

        public boolean addAll​(int index,
                      java.util.Collection<? extends E> elements)
        Specified by:
        addAll in interface java.util.List<E>

      • get

        public E get​(int index)
        Specified by:
        get in interface java.util.List<E>

      • indexOf

        public int indexOf​(java.lang.Object element)
        Specified by:
        indexOf in interface java.util.List<E>

      • lastIndexOf

        public int lastIndexOf​(java.lang.Object element)
        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>

      • remove

        public E remove​(int index)
        Specified by:
        remove in interface java.util.List<E>

      • set

        public E set​(int index,
             E element)
        Specified by:
        set 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>

      • equals

        public boolean equals​(@Nullable
                      java.lang.Object object)
        Specified by:
        equals in interface java.util.Collection<E>
        Specified by:
        equals in interface java.util.List<E>
        Overrides:
        equals in class java.lang.Object

      • hashCode

        public int hashCode()
        Specified by:
        hashCode in interface java.util.Collection<E>
        Specified by:
        hashCode in interface java.util.List<E>
        Overrides:
        hashCode in class java.lang.Object