Class ArrayCollection<E>

  • All Implemented Interfaces:
    java.lang.Iterable<E>, java.util.Collection<E>

    public class ArrayCollection<E>
    extends java.lang.Object
    implements java.util.Collection<E>
    Expose an array of ArrayCollection as an immutable Collection Changes to the array are reflected in the collection.
    • Constructor Summary

      Constructors 
      Constructor Description
      ArrayCollection​(E[] array)  
      ArrayCollection​(E[] array, java.util.function.IntSupplier populatedSizeSupplier)  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean add​(E E)  
      boolean addAll​(java.util.Collection<? extends E> c)  
      void clear()  
      boolean contains​(java.lang.Object o)  
      boolean containsAll​(java.util.Collection<?> c)  
      boolean isEmpty()  
      java.util.Iterator<E> iterator()  
      boolean remove​(java.lang.Object o)  
      boolean removeAll​(java.util.Collection<?> c)  
      boolean retainAll​(java.util.Collection<?> c)  
      int size()  
      java.lang.Object[] toArray()  
      <T> T[] toArray​(T[] a)  
      java.lang.String toString()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
      • Methods inherited from interface java.util.Collection

        equals, hashCode, parallelStream, removeIf, spliterator, stream, toArray
      • Methods inherited from interface java.lang.Iterable

        forEach
    • Constructor Detail

      • ArrayCollection

        public ArrayCollection​(E[] array)
      • ArrayCollection

        public ArrayCollection​(E[] array,
                               java.util.function.IntSupplier populatedSizeSupplier)
        Parameters:
        array - backing the collection
        populatedSizeSupplier - for when the caller has a more efficient way of knowing the populated size of the array
    • Method Detail

      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<E>
        Returns:
        the number of non-null elements in the backing array.
      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Collection<E>
        Returns:
        true if the backing array is does not contain any non-null elements.
      • 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 E)
        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>
      • 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>
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object