Does Java Plug-in Software replace Microsofts or Netscapes Java runtime with Suns JRE?
No. Java Plug-in Software does not replace the browser’s underlying virtual machine if it has one. (Netscape 6 and later versions of Internet Explorere 6 do not have a Java virtual machine.) Rather, Java Plug-in Software simply enables web-page authors to specify that Sun’s JRE be used instead of the default Java runtime.