activating an applet after clicking submit button. . .

i want to view a different applet upon clicking submit button. how can i make this work in java applet. Guess its what you call external class calling. . help please.

So the submit button is part of an applet? You can use the AppletContext.showDocument method to navigate to a different HTML page (which would contain the other applet).

the class i want to access is called 'call.class' . where in the applet must i put this code. please may you give me the sample code. thank you

You said "i want to view a different applet". Now you're saying "i want to access [...] 'call.class" - which is it? And what does it mean to "access a class" - call one of its methods?