Here you can find the source of replaceAll(String text, Pattern pattern, String replace)
private static String replaceAll(String text, Pattern pattern, String replace)
//package com.java2s; /*//from w ww .j a va2s.c o m * Copyright (C) 2012 Krawler Information Systems Pvt Ltd * All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { private static String replaceAll(String text, Pattern pattern, String replace) { Matcher m = pattern.matcher(text); StringBuffer sb = null; while (m.find()) { if (sb == null) sb = new StringBuffer(); m.appendReplacement(sb, replace); } if (sb != null) m.appendTail(sb); return sb == null ? text : sb.toString(); } }