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/*
 * Copyright 2015 Netflix, Inc.
 *
 * 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.netflix.discovery.util;

public final class StringUtil {

    private StringUtil() {
    }

    /**
     * Join all values separating them with a comma.
     */
    public static String join(String... values) {
        if (values == null || values.length == 0) {
            return null;
        }
        StringBuilder sb = new StringBuilder();
        for (String value : values) {
            sb.append(',').append(value);
        }
        return sb.substring(1);
    }
}