test.html
<applet class = "yourclass.class" width = xxx height = xxx>
this is a applet
</applet>
open test.html or enter appletviewer test.html in cmd line, ok
<applet class = "yourclass.class" width = xxx height = xxx>
this is a applet
</applet>
open test.html or enter appletviewer test.html in cmd line, ok
<applet class = "XX.class" width = xxx height = xxx>XXX</applet>
exception:java.lang.classnotfound