"An applet is a Java program that runs in a Web program. ... Applets are intended to be installed inside an HTML page. At the point when a client sees an HTML page that consists of an applet, the code for the applet is downloaded to the client's machine. A JVM is needed to see an applet.
The Applets are utilized to give intelligent highlights to web applications that can't be given by HTML alone. They can catch mouse include and furthermore have controls like fastens or check boxes. In light of client activities, an applet can change the gave realistic substance.