Examples of java.util.AbstractSet

java.util.AbstractSet
This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface.
The process of implementing a set by extending this class is identical to that of implementing a Collection by extending AbstractCollection, except that all of the methods and constructors in subclasses of this class must obey the additional constraints imposed by the Set interface (for instance, the add method must not permit addition of multiple instances of an object to a set).
Note that this class does not override any of the implementations from the AbstractCollection class. It merely adds implementations for equals and hashCode.
This class is a member of the Java Collections Framework. @param < E> the type of elements maintained by this set @author Josh Bloch @author Neal Gafter @version 1.29, 04/21/06 @see Collection @see AbstractCollection @see Set @since 1.2

            for (int i = 0; i < length; ++i) {
                XSObject xso = item(i);
                entries[i] = new XSNamedMapEntry(new QName(xso.getNamespace(), xso.getName()), xso);
            }
            // Create a view of this immutable map.
            fEntrySet = new AbstractSet() {
                public Iterator iterator() {
                    return new Iterator() {
                        private int index = 0;
                        public boolean hasNext() {
                            return (index < length);

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    /**
     * Implements {@link Map#keySet()}.
     */
    public Set keySet()
    {
        return new AbstractSet()
        {


            // required impls
            public Iterator iterator()
            {

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    /**
     * Implements {@link Map#entrySet()}.
     */
    public Set entrySet()
    {
        return new AbstractSet()
        {
            // helper
            private Entry findEntry( Object o )
            {
                if ( o == null )

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        Vector values = new Vector();


        Vector keys = new Vector();


        public Set entrySet() {
            return new AbstractSet() {
                public Iterator iterator() {
                    return new Iterator() {
                        int index = 0;


                        public boolean hasNext() {

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         return size() == 0;
      }


      public Set keySet()
      {
         return new AbstractSet()
         {


            @Override
            public Iterator iterator()
            {

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        Vector values = new Vector();


        Vector keys = new Vector();


        public Set entrySet() {
            return new AbstractSet() {
                public Iterator iterator() {
                    return new Iterator() {
                        int index = 0;


                        public boolean hasNext() {

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     */
    public Set entrySet() {
        if (entrySet != null) {
            return entrySet;
        } 
        entrySet = new AbstractSet() {
            public int size() {
                return ReferenceMap.this.size();
            }


            public void clear() {

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     *
     *  @return a set view of this map's keys
     */
    public Set keySet() {
        if (keySet != null) return keySet;
        keySet = new AbstractSet() {
            public int size() {
                return ReferenceMap.this.size();
            }


            public Iterator iterator() {

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   }


   @Override
   public Object getWrappedData()
   {
      return new AbstractSet()
      {
         @Override
         public Iterator iterator()
         {
            return entries.iterator();

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         return size() == 0;
      }


      public Set keySet()
      {
         return new AbstractSet()
         {


            @Override
            public Iterator iterator()
            {

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