## org.apache.tools.ant.util
Class VectorSet

    java.lang.Object
      java.util.AbstractCollection<E>
          java.util.AbstractList<E>
              java.util.Vector
                  org.apache.tools.ant.util.VectorSet

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.List, java.util.RandomAccess

    public final class VectorSet

extends java.util.Vector

Subclass of Vector that won't store duplicate entries and shows HashSet's constant time performance characteristics for the contains method.

This is not a general purpose class but has been written because the protected members of `DirectoryScanner` prohibited later revisions from using a more efficient collection.

Methods are synchronized to keep Vector's contract.

Since:
  Ant 1.8.0
See Also:
  Serialized Form

Field Summary

Fields inherited from class java.util.Vector
`capacityIncrement, elementCount, elementData`

Fields inherited from class java.util.AbstractList
`modCount`

Constructor Summary
`VectorSet()`
`VectorSet(java.util.Collection c)`
`VectorSet(int initialCapacity)`
`VectorSet(int initialCapacity, int capacityIncrement)`

Method Summary
`void` `add(int index, java.lang.Object o)` This implementation may not add the element at the given index if it is already contained in the collection.
`boolean` `add(java.lang.Object o)`
`boolean` `addAll(java.util.Collection c)`
`boolean` `addAll(int index, java.util.Collection c)` This implementation may not add all elements at the given index if any of them are already contained in the collection.
`void` `addElement(java.lang.Object o)`
`void` `clear()`
`java.lang.Object` `clone()`
`boolean` `contains(java.lang.Object o)`
`boolean` `containsAll(java.util.Collection c)`
`void` `insertElementAt(java.lang.Object o, int index)`
`java.lang.Object` `remove(int index)`
`boolean` `remove(java.lang.Object o)`
`boolean` `removeAll(java.util.Collection c)`
`void` `removeAllElements()`
`boolean` `removeElement(java.lang.Object o)`
`void` `removeElementAt(int index)`
`void` `removeRange(int fromIndex, int toIndex)`
`boolean` `retainAll(java.util.Collection c)`
`java.lang.Object` `set(int index, java.lang.Object o)`
`void` `setElementAt(java.lang.Object o, int index)`

Methods inherited from class java.util.Vector
`capacity, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, get, hashCode, indexOf, indexOf, isEmpty, lastElement, lastIndexOf, lastIndexOf, setSize, size, subList, toArray, toArray, toString, trimToSize`

Methods inherited from class java.util.AbstractList
`iterator, listIterator, listIterator`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.util.List
`iterator, listIterator, listIterator`

Constructor Detail

### VectorSet

    public VectorSet()

### VectorSet

    public VectorSet(int initialCapacity)

### VectorSet

    public VectorSet(int initialCapacity,
                     int capacityIncrement)

### VectorSet

    public VectorSet(java.util.Collection c)

Method Detail

### add

    public boolean add(java.lang.Object o)

  Specified by:
    `add` in interface `java.util.Collection`
  Specified by:
    `add` in interface `java.util.List`
  Overrides:
    `add` in class `java.util.Vector`

### add

    public void add(int index,
                    java.lang.Object o)

  This implementation may not add the element at the given index if it is already contained in the collection.

  Specified by:
    `add` in interface `java.util.List`
  Overrides:
    `add` in class `java.util.Vector`

### addElement

    public void addElement(java.lang.Object o)

  Overrides:
    `addElement` in class `java.util.Vector`

### addAll

    public boolean addAll(java.util.Collection c)

  Specified by:
    `addAll` in interface `java.util.Collection`
  Specified by:
    `addAll` in interface `java.util.List`
  Overrides:
    `addAll` in class `java.util.Vector`

### addAll

    public boolean addAll(int index,
                          java.util.Collection c)

  This implementation may not add all elements at the given index if any of them are already contained in the collection.

  Specified by:
    `addAll` in interface `java.util.List`
  Overrides:
    `addAll` in class `java.util.Vector`

### clear

    public void clear()

  Specified by:
    `clear` in interface `java.util.Collection`
  Specified by:
    `clear` in interface `java.util.List`
  Overrides:
    `clear` in class `java.util.Vector`

### clone

    public java.lang.Object clone()

  Overrides:
    `clone` in class `java.util.Vector`

### contains

    public boolean contains(java.lang.Object o)

  Specified by:
    `contains` in interface `java.util.Collection`
  Specified by:
    `contains` in interface `java.util.List`
  Overrides:
    `contains` in class `java.util.Vector`

### containsAll

    public boolean containsAll(java.util.Collection c)

  Specified by:
    `containsAll` in interface `java.util.Collection`
  Specified by:
    `containsAll` in interface `java.util.List`
  Overrides:
    `containsAll` in class `java.util.Vector`

### insertElementAt

    public void insertElementAt(java.lang.Object o,
                                int index)

  Overrides:
    `insertElementAt` in class `java.util.Vector`

### remove

    public java.lang.Object remove(int index)

  Specified by:
    `remove` in interface `java.util.List`
  Overrides:
    `remove` in class `java.util.Vector`

### remove

    public boolean remove(java.lang.Object o)

  Specified by:
    `remove` in interface `java.util.Collection`
  Specified by:
    `remove` in interface `java.util.List`
  Overrides:
    `remove` in class `java.util.Vector`

### removeAll

    public boolean removeAll(java.util.Collection c)

  Specified by:
    `removeAll` in interface `java.util.Collection`
  Specified by:
    `removeAll` in interface `java.util.List`
  Overrides:
    `removeAll` in class `java.util.Vector`

### removeAllElements

    public void removeAllElements()

  Overrides:
    `removeAllElements` in class `java.util.Vector`

### removeElement

    public boolean removeElement(java.lang.Object o)

  Overrides:
    `removeElement` in class `java.util.Vector`

### removeElementAt

    public void removeElementAt(int index)

  Overrides:
    `removeElementAt` in class `java.util.Vector`

### removeRange

    public void removeRange(int fromIndex,
                            int toIndex)

  Overrides:
    `removeRange` in class `java.util.Vector`

### retainAll

    public boolean retainAll(java.util.Collection c)

  Specified by:
    `retainAll` in interface `java.util.Collection`
  Specified by:
    `retainAll` in interface `java.util.List`
  Overrides:
    `retainAll` in class `java.util.Vector`

### set

    public java.lang.Object set(int index,
                                java.lang.Object o)

  Specified by:
    `set` in interface `java.util.List`
  Overrides:
    `set` in class `java.util.Vector`

### setElementAt

    public void setElementAt(java.lang.Object o,
                             int index)

  Overrides:
    `setElementAt` in class `java.util.Vector`