Here you can find the source of quoteString(final String text)
public static String quoteString(final String text)
//package com.java2s; /*!/*from w w w. jav a 2 s. c o m*/ * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software * Foundation. * * You should have received a copy of the GNU Lesser General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * 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 Lesser General Public License for more details. * * Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved. */ public class Main { private static final char QUOTE_CHAR = '"'; public static String quoteString(final String text) { if (text == null) { return null; } final StringBuilder b = new StringBuilder(text.length()); final char[] chars = text.toCharArray(); b.append(QUOTE_CHAR); for (int i = 0; i < chars.length; i++) { final char c = chars[i]; if (c == QUOTE_CHAR) { b.append(QUOTE_CHAR); } b.append(c); } b.append(QUOTE_CHAR); return b.toString(); } }