Here you can find the source of dequote(final String in)
public static String dequote(final String in)
//package com.java2s; /*//from w w w.j av a 2 s . com * #%L * Tesora Inc. * Database Virtualization Engine * %% * Copyright (C) 2011 - 2014 Tesora Inc. * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, version 3, * as published by the Free Software Foundation. * * 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * #L% */ public class Main { private static final String SINGLE_QUOTE = "'"; private static final String DOUBLE_QUOTE = "\""; private static final String BACK_QUOTE = "`"; public static String dequote(final String in) { if ((in != null) && !in.isEmpty() && isQuoted(in)) { // strip off the quotes return in.substring(1, in.length() - 1); } return in; } public static boolean isQuoted(final String value) { return (isQuoted(value, SINGLE_QUOTE) || isQuoted(value, DOUBLE_QUOTE) || isQuoted(value, BACK_QUOTE)); } private static boolean isQuoted(final String value, final String quote) { return value.startsWith(quote) && value.endsWith(quote); } }