The applets are used to provide interactive features to web applications that cannot be provided by HTML alone. They can capture mouse input and also have controls like buttons or check boxes. In response to user actions,

Most browsers executed Java applets in a sandbox, preventing applets from accessing local data like the file system. The code of the applet

A Java applet could have any or all of the following advantages:
• It was simple to make it work on FreeBSD, Linux, Microsoft Windows

Sun made considerable efforts to ensure compatibility is maintained between Java versions as they evolve, enforcing Java portability by law if required. Oracle seems to be continuing the same strategy.
1997: Sun vs Microsoft
The 1997 lawsuit, was

The applet would be displayed on the web page by making use of the deprecated applet HTML element, or the recommended object element. The embed element can be used with Mozilla family browsers (embed was deprecated in HTML 4 but is included in

Java applets had the following disadvantages compared to other client-side web technologies:
• Java applets would depend on a Java Runtime Environment (JRE), a complex and heavy-weight software package. They also normally required a

There were two applet types with very different security models: signed applets and unsigned applets. Starting with Java SE 7 Update 21 (April 2013) applets and Web-Start Apps are