Here you can find the source of prettyPrintList(Collection> objects, String separator)
public static String prettyPrintList(Collection<?> objects, String separator)
//package com.java2s; /*//from w ww. ja v a 2 s .c om * Copyright 1996-2014 UOL 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. */ import java.util.*; public class Main { public static String prettyPrintList(Collection<?> objects, String separator) { if (null == objects || objects.isEmpty()) { return ""; } StringBuffer result = new StringBuffer(400); int curr = 0; for (Object mensagem : objects) { result.append(mensagem); if (++curr < objects.size()) { result.append(separator); } } return result.toString(); } }