Package com.globalmentor.collections

Class CollectionDecorator<E>

  • Type Parameters:
    E - The type of element contained in the collection.
    All Implemented Interfaces:
    java.lang.Iterable<E>, java.util.Collection<E>
    Direct Known Subclasses:
    AbstractConverterCollection, ListDecorator
    public class CollectionDecorator<E>
extends java.lang.Object
implements java.util.Collection<E>
    A collection that wraps an existing collection, providing access through the Collection interface.
    Author:
    Garret Wilson

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected java.util.Collection<E> collection
      The collection this class decorates.

    • Constructor Summary

      Constructors 
      Constructor Description
      CollectionDecorator​(java.util.Collection<E> collection)
      Collection constructor.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean add​(E o)  
      boolean addAll​(java.util.Collection<? extends E> c)  
      void clear()  
      boolean contains​(java.lang.Object o)  
      boolean containsAll​(java.util.Collection<?> c)  
      boolean equals​(java.lang.Object o)  
      int hashCode()  
      boolean isEmpty()  
      java.util.Iterator<E> iterator()  
      java.util.stream.Stream<E> parallelStream()  
      boolean remove​(java.lang.Object o)  
      boolean removeAll​(java.util.Collection<?> c)  
      boolean removeIf​(java.util.function.Predicate<? super E> filter)  
      boolean retainAll​(java.util.Collection<?> c)  
      int size()  
      java.util.Spliterator<E> spliterator()  
      java.util.stream.Stream<E> stream()  
      java.lang.Object[] toArray()  
      <T> T[] toArray​(T[] a)  

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

    • Field Detail

      • collection

        protected final java.util.Collection<E> collection
        The collection this class decorates.

    • Constructor Detail

      • CollectionDecorator

        public CollectionDecorator​(java.util.Collection<E> collection)
        Collection constructor.
        Parameters:
        collection - The collection this collection should decorate.
        Throws:
        java.lang.NullPointerException - if the provided collection is null.

    • Method Detail

      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<E>

      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Collection<E>

      • contains

        public boolean contains​(java.lang.Object o)
        Specified by:
        contains in interface java.util.Collection<E>

      • iterator

        public java.util.Iterator<E> iterator()
        Specified by:
        iterator in interface java.util.Collection<E>
        Specified by:
        iterator in interface java.lang.Iterable<E>

      • toArray

        public java.lang.Object[] toArray()
        Specified by:
        toArray in interface java.util.Collection<E>

      • toArray

        public <T> T[] toArray​(T[] a)
        Specified by:
        toArray in interface java.util.Collection<E>

      • add

        public boolean add​(E o)
        Specified by:
        add in interface java.util.Collection<E>

      • remove

        public boolean remove​(java.lang.Object o)
        Specified by:
        remove in interface java.util.Collection<E>

      • containsAll

        public boolean containsAll​(java.util.Collection<?> c)
        Specified by:
        containsAll in interface java.util.Collection<E>

      • addAll

        public boolean addAll​(java.util.Collection<? extends E> c)
        Specified by:
        addAll in interface java.util.Collection<E>

      • removeAll

        public boolean removeAll​(java.util.Collection<?> c)
        Specified by:
        removeAll in interface java.util.Collection<E>

      • removeIf

        public boolean removeIf​(java.util.function.Predicate<? super E> filter)
        Specified by:
        removeIf in interface java.util.Collection<E>

      • retainAll

        public boolean retainAll​(java.util.Collection<?> c)
        Specified by:
        retainAll in interface java.util.Collection<E>

      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Collection<E>

      • equals

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

      • hashCode

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

      • spliterator

        public java.util.Spliterator<E> spliterator()
        Specified by:
        spliterator in interface java.util.Collection<E>
        Specified by:
        spliterator in interface java.lang.Iterable<E>

      • stream

        public java.util.stream.Stream<E> stream()
        Specified by:
        stream in interface java.util.Collection<E>

      • parallelStream

        public java.util.stream.Stream<E> parallelStream()
        Specified by:
        parallelStream in interface java.util.Collection<E>