/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.atlas.iterator;

import java.util.Iterator ;
import java.util.NoSuchElementException ;

/** Null Iterator - also guaranteed sharable and immutable */
public class NullIterator<T> implements Iterator<T>, Iterable<T>
{
    @Override
    public boolean hasNext()
    {
        return false ;
    }

    @Override
    public T next()
    {
        throw new NoSuchElementException("NullIterator.next") ;
    }

    @Override
    public void remove()
    { throw new NoSuchElementException("NullIterator.remove") ;}

    @Override
    public Iterator<T> iterator()
    {
        return this ;
    }

}