Can a single quote be used at the beginning of a query string parameter

Hi all,
I am a relative newbie and have a newbie question.
Can a single quote be used at the beginning of a query string parameter passed to a jsp page? Are there any inherant problems with this? Is there a comprehensive list of characters that must be escaped in a query string parameter?
Example: http://mysite.com/myjsp.jsp?param1='nghdh
Thanks

You'll have to escape most non-letter characters before you can pass them as a URL. I don't know if it's necessary for a single quote, but better safe than sorry.
Either use java.net.URLEncoder(...) or use javax.servlet.http.HttpServletResponse.encodeURL(String). I wouldn't recommend using unescaped characters in your URLs, that might cause pretty funny behavior that's sometimes hard to trace back. Don't worry about decoding it, your JSP/Servlet container will do it when you call javax.servlet.http.HttpServletRequest.getParameter(String).

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Can a single quote be used at the beginning of a query string parameter

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