The window below runs a small Java applet to display version information about the Java virtual machine
installed on your system:
If the window above displays information in the form:-
BuildIncrement: 3810 MajorVersion: 5 Description: Microsoft (R) VM for Java,
5.0 BuildNumber: 0 Minor Version 0
then you have a Microsoft JVM correctly installed. Build Increment
3810 is the current version which contains security patches to build 3805.
If the window displays "Non Microsoft JVM" you have a virtual machine from someone
other than Microsoft - typically Sun.
If there is no window displayed and you see the text
"You do not appear to have a Java Virtual machine installed"
, then you do not have a Java virtual machine installed on this machine or alternatively
it is not enabled in this browser.
Further information about Microsoft
Java virtual machine installations is contained in the registry. Run "regedit"
from the Windows start button. If a Microsoft Java virtual machine is present there
will be a registry key
If this family of registry keys is present then you have a Microsoft JVM installed. If it is absent
you do not.
The value of the key "Classpath"
will often contain a value which has version number information implied
in it. For example on a system with build 3810 installed the value will
Similarly, a system with a Microsoft
JVM installed should have *.jar files in the java\classes folder under
the windows installation. Typically: "C:\windows\java\classes".
On a system without a Microsoft JVM installed the folder will not contain
the *.jar files.