Check whether the given Iterator contains the given element. - Java Collection Framework

Java examples for Collection Framework:Iterator

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Description

Check whether the given Iterator contains the given element.

Demo Code

/*/*  w w  w  . j  a  v a2 s  . com*/
 * Copyright 2002-2015 the original author or authors.
 *
 * 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.java2s;
import java.util.*;

public class Main {
    public static void main(String[] argv) {
        Iterator iterator = java.util.Arrays.asList("asdf", "java2s.com")
                .iterator();
        Object element = "java2s.com";
        System.out.println(contains(iterator, element));
    }

    /**
     * Check whether the given Iterator contains the given element.
     *
     * @param iterator the Iterator to check
     * @param element  the element to look for
     * @return {@code true} if found, {@code false} else
     */
    public static boolean contains(Iterator<?> iterator, Object element) {
        if (iterator != null) {
            while (iterator.hasNext()) {
                Object candidate = iterator.next();
                if (org.springframework.util.ObjectUtils.nullSafeEquals(
                        candidate, element)) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * Check whether the given Enumeration contains the given element.
     *
     * @param enumeration the Enumeration to check
     * @param element     the element to look for
     * @return {@code true} if found, {@code false} else
     */
    public static boolean contains(Enumeration<?> enumeration,
            Object element) {
        if (enumeration != null) {
            while (enumeration.hasMoreElements()) {
                Object candidate = enumeration.nextElement();
                if (org.springframework.util.ObjectUtils.nullSafeEquals(
                        candidate, element)) {
                    return true;
                }
            }
        }
        return false;
    }
}

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