Java applets - very basic question

[Arra]

I'm just starting to learn java applets. I'm using IE. Every time I need to recompile the code and view the applet again to see the changes, I seem to have to both start a new browser, and delete the .class file before recompiling it (I think). I need to open a new browser; opening a new tab doesn't work. On the school computer I also had to exit the browser, but didn't have to delete the .class file. Is there some internet option I can change to make the browser actually look for the .class file and read it again every time the page is refreshed? Or a different browser which does this automatically? I tried firefox at school and had the same problem. I guess if there's nothing to be done about it I'll try using appletviewer (if that's what it's called).