Which Version Am I Running On

Here's a snippet of JSP code that displays the Servlet API version, the JSP version, the JRE version and also the name and version of the servlet container (taken from a Saloon post by Bauke Scholtz).
Server info: <%= application.getServerInfo() %><br> Servlet version: <%= application.getMajorVersion() %>.<%= application.getMinorVersion() %><br> JSP version: <%= JspFactory.getDefaultFactory().getEngineInfo().getSpecificationVersion() %><br> Java version: <%= System.getProperty("java.version") %><br>

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JspFaq ServletsFaq