Merge the given array into the given Collection. - Java Collection Framework

Java examples for Collection Framework:Array Merge

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Description

Merge the given array into the given Collection.

Demo Code

/*/*w  w w.  j  a v  a2 s . c o m*/
 * 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) {
        Object array = "java2s.com";
        Collection collection = java.util.Arrays.asList("asdf",
                "java2s.com");
        mergeArrayIntoCollection(array, collection);
    }

    /**
     * Merge the given array into the given Collection.
     *
     * @param array      the array to merge (may be {@code null})
     * @param collection the target Collection to merge the array into
     */
    @SuppressWarnings("unchecked")
    public static <E> void mergeArrayIntoCollection(Object array,
            Collection<E> collection) {
        if (collection == null) {
            throw new IllegalArgumentException(
                    "Collection must not be null");
        }
        Object[] arr = org.springframework.util.ObjectUtils
                .toObjectArray(array);
        for (Object elem : arr) {
            collection.add((E) elem);
        }
    }
}

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