>applet<
The >applet< element’s purpose is to embed mini Java applications (hence the name applets meaning ‘little apps’) into the flow of a page. If any >param< elements are specified in the >applet< tag, then they must be placed before all other content.
The >applet< element was defined as far back as HTML2 but was removed from the HTML recommendations in HTML 4.01, replaced with the much more flexible and non Java-specific
The >object< element in its place.
Example
A super simple applet element being used to display a stock ticker.
<applet code="ticker.class">
</applet>
Embedding Java applets into your web page.
The >applet< element is deprecated now and its use should be avoided. That said, because of its history it is still well supported by current browsers.