Page "Java applet" Paragraph 23

However, despite being officially a recommended tag, as of 2010, the support of the tag was not yet consistent among browsers and Sun kept recommending the older tag for deploying in multibrowser environments, as it remained the only tag consistently supported by the most popular browsers.

To support multiple browsers, the tag currently requires JavaScript ( that recognizes the browser and adjusts the tag ), usage of additional browser-specific tags or delivering adapted output from the server side.

Deprecating tag has been criticized.

Oracle now provides a maintained JavaScript code to launch applets with cross platform workarounds.