Java Iterator singletonIterator(final Object item)

Description

singleton Iterator

License

Open Source License

Declaration

public static Iterator singletonIterator(final Object item) 

Method Source Code

//package com.java2s;
/*/*from ww  w  .  j a v  a2s  .  co  m*/
 * GNU LESSER GENERAL PUBLIC LICENSE Copyright (C) 2006 The Lobo Project
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * Contact info: lobochief@users.sourceforge.net
 */

import java.util.Iterator;

import java.util.NoSuchElementException;

public class Main {
    public static Iterator singletonIterator(final Object item) {

        return new Iterator() {

            private boolean gotItem = false;

            public boolean hasNext() {

                return !this.gotItem;
            }

            public Object next() {

                if (this.gotItem) {
                    throw new NoSuchElementException();
                }
                this.gotItem = true;
                return item;
            }

            public void remove() {

                if (!this.gotItem) {
                    this.gotItem = true;
                } else {
                    throw new NoSuchElementException();
                }
            }
        };
    }
}

Related

1. searchIndexInIterator(Iterator iterator, T value)
2. shallowUnionColIter(Iterator> values)
3. single(Iterator i)
4. singleElementIterator(T element)
5. singleOrDefault(Iterator iterator)
6. singletonIterator(final T item)
7. singletonIterator(final T nullableValue)
8. singletonIterator(final T t)
9. size(Iterator iterator)