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AYLIEN's officially supported Java client library for accessing News API

There is a newer version: 3.0.1

/**
 * Copyright 2016 Aylien, Inc. All Rights Reserved.
 *
 * 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.aylien.newsapi;


public class StringUtil {
    /**
     * Check if the given array contains the given value (with case-insensitive comparison).
     *
     * @param array The array
     * @param value The value to search
     * @return true if the array contains the value
     */
    public static boolean containsIgnoreCase(String[] array, String value) {
        for (String str : array) {
            if (value == null && str == null) return true;
            if (value != null && value.equalsIgnoreCase(str)) return true;
        }
        return false;
    }

    /**
     * Join an array of strings with the given separator.
     * 
     * Note: This might be replaced by utility method from commons-lang or guava someday
     * if one of those libraries is added as dependency.
     * 
     *
     * @param array     The array of strings
     * @param separator The separator
     * @return the resulting string
     */
    public static String join(String[] array, String separator) {
        int len = array.length;
        if (len == 0) return "";

        StringBuilder out = new StringBuilder();
        out.append(array[0]);
        for (int i = 1; i < len; i++) {
            out.append(separator).append(array[i]);
        }
        return out.toString();
    }
}