Here you can find the source of quotedString(String string)
private static String quotedString(String string)
//package com.java2s; /*//from w w w.j a v a 2s . c om * ProGuard -- shrinking, optimization, obfuscation, and preverification * of Java bytecode. * * Copyright (c) 2002-2012 Eric Lafortune (eric@graphics.cornell.edu) * * 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., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ public class Main { /** * Returns a quoted version of the given string, if necessary. */ private static String quotedString(String string) { return string.length() == 0 || string.indexOf(' ') >= 0 || string.indexOf('@') >= 0 || string.indexOf('{') >= 0 || string.indexOf('}') >= 0 || string.indexOf('(') >= 0 || string.indexOf(')') >= 0 || string.indexOf(':') >= 0 || string.indexOf(';') >= 0 || string.indexOf(',') >= 0 ? ("'" + string + "'") : (string); } }