Here you can find the source of unquote(String argument)
public static String unquote(String argument)
//package com.java2s; public class Main { public static String unquote(String argument) { if (!argument.startsWith("\"") || !argument.endsWith("\"")) { return argument; }//from w w w . java 2s . c o m return argument.substring(1, argument.length() - 1); } }