🚀 go-pugleaf

I have some questions about JVMs and how they work with Java.  More
precisely, I have some impressions about JVMs and Java that I would like
either confirmed or corrected.

1.  Each browser has its own JVM, and there are other JVMs also.  For
instance, IE has its own JVM, and NS has its own JVM, and Sun has its own
JVM.  So if I run an applet inside IE, am I using a different JVM than if I
run the same applet inside NS?  If I download the Java Plug-In from Sun,
does that mean IE and NS and every other browser on my computer will use the
Sun JVM?
2.  When I write a Java Program, do I need to make sure that I only use the
java.* packages in order to be as portable as possible?  Or can I use any
package as long as it is downloaded to my user's computer?
3.  What is the advantage of using Java over ActiveX controls (besides
security)?

I appreciate any responses or references.  Thanks.

Dan Simon
dsimon@northerndata.com