Here you can find the source of quote(String str)
private static String quote(String str)
//package com.java2s; /**************************************************************** * Licensed to the Apache Software Foundation (ASF) under one * * or more contributor license agreements. See the NOTICE file * * distributed with this work for additional information * * regarding copyright ownership. The ASF licenses this file * * to you 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. * ****************************************************************/ public class Main { private static String quote(String str) { // quoted-string = [CFWS] DQUOTE *([FWS] qcontent) [FWS] DQUOTE [CFWS] // qcontent = qtext / quoted-pair // qtext = %d33 / %d35-91 / %d93-126 // quoted-pair = ("\" (VCHAR / WSP)) // VCHAR = %x21-7E // DQUOTE = %x22 String escaped = str.replaceAll("[\\\\\"]", "\\\\$0"); return "\"" + escaped + "\""; }/*w w w.j ava 2s. c o m*/ }