/* * 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); } }