Here you can find the source of toArray(List lista)
public static String toArray(List lista)
//package com.java2s; /*//from w w w . j a v a 2s . co m * Copyright (c) 2009 Giuseppe Trisciuoglio * * 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; import java.util.List; public class Main { public static String toArray(List lista) { StringBuffer sb = new StringBuffer(); sb.append("["); for (Iterator iterator = lista.iterator(); iterator.hasNext();) { Object object = (Object) iterator.next(); sb.append(object.toString()); if (iterator.hasNext()) sb.append(","); } sb.append("]"); return sb.toString(); } }