SingleIterator.java

/*
 * Copyright 2015 MiLaboratory.com
 *
 * Licensed 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 com.milaboratory.util;

import java.util.Iterator;

/**
 * Iterator over one single element.
 *
 * @author Dmitry Bolotin
 * @author Stanislav Poslavsky
 * @since 1.0
 */
public final class SingleIterator<T> implements Iterator<T> {
    private T element;
    private boolean ended = false;

    public SingleIterator(T element) {
        this.element = element;
    }

    @Override
    public boolean hasNext() {
        return !ended;
    }

    @Override
    public T next() {
        ended = true;
        return element;
    }

    @Override
    public void remove() {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}