Here you can find the source of listToComma(List list)
public static String listToComma(List list)
//package com.java2s; /*/*from www.j a v a 2s . c om*/ * Copyright 2015 the original author or authors. * @https://github.com/scouter-project/scouter * * 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. * */ import java.util.List; public class Main { public static String listToComma(List list) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { sb.append(String.valueOf(list.get(i))); if (i < list.size() - 1) { sb.append(","); } } return sb.toString(); } }