Here you can find the source of iterableToString(Iterable
public static String iterableToString(Iterable<CharSequence> charSequenceIterable)
//package com.java2s; /**/*from w w w .jav a 2 s . c o m*/ * Copyright 2012 Niall Gallagher * * 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.Iterator; public class Main { public static String iterableToString(Iterable<CharSequence> charSequenceIterable) { StringBuilder sb = new StringBuilder("["); for (Iterator<CharSequence> iterator = charSequenceIterable.iterator(); iterator.hasNext();) { CharSequence charSequence = iterator.next(); sb.append(charSequence); if (iterator.hasNext()) { sb.append(", "); } } sb.append("]"); return sb.toString(); } }