How to determine the client browser version? Also, how to check if it allows cookies?

Created May 3, 2012

Ramakrishna puppala

Another name for "browser" is "user agent." You can read the User-Agent header using request.getUserAgent() or request.getHeader("User-Agent")

See this question in the JSP FAQ: http://www.jguru.com/jguru/faq/view.jsp?EID=12253 for a class which embodies lots of good info about the browser.

It's not enough to tell if the browser might possibly support cookies; you also must tell if the user has enabled or disabled cookies. For that, you must drop a test cookie on the browser, then see if it gets sent back. A servlet that does this is called CookieDetector, at http://www.purpletech.com/code/.

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