detect users java version from servlet...

[tiewknvc9]

Hi!

Im trying to figure out how to detect the users java version from a
servlet.

If I use String strVersion = (System.getProperty("java.version"));

I get the java version of the server, is there any way to get the users
java version?

 

[impaler]

Hi!

Im trying to figure out how to detect the users java version from a
servlet.

If I use String strVersion = (System.getProperty("java.version"));

I get the java version of the server, is there any way to get the users
java version?

You get the version of the JVM the app is running on.
If it's a web app, the user doesn't even need java unless your app is
an applet but in this case there is no need for servlets.

 

[Mike Schilling]

Hi!

Im trying to figure out how to detect the users java version from a
servlet.

If I use String strVersion = (System.getProperty("java.version"));

I get the java version of the server, is there any way to get the users
java version?

No, in fact there's no way to tell if the client is using Java at all. It's
really the same question as

I'm reading a disk file. How can I tell what version of Java was used
to write the file?

In both cases you're processing a sequence of bytes, and there is no
evidence how those bytes were constructed.

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

Im trying to figure out how to detect the users java version from a
servlet.

If I use String strVersion = (System.getProperty("java.version"));

I get the java version of the server, is there any way to get the users
java version?

The only way is to have the client side code send something
to the server side indicating the version.

Arne