Detect Java enabled browser

[Ryan Stewart]

I'm working on a project to collect usage statistics, and I'm looking for a
way to detect whether a browser has a Java plugin. I'll be writing it in
Java, and am quite familiar with J2EE, or at least the servlet corner of it.
Ideally, I'd like something I can JAR up and drop in an application and have
it collect data. Obviously I can't quite get away with that, but that's the
direction I'm going with it. So... anyone have experience with this? Can I
get Java version and such?

 

[SPG]

This will do what you want..
Obviously, once you have the VM properties, you can do with them as you
please.. Like post them back to a servlet or external service etc..

Steve

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class VMDetect
extends Applet {

//Construct the applet
public VMDetect() {
}

//Initialize the applet
public void init() {
String vmName = System.getProperty("java.vm.name");
String vVendor = System.getProperty("java.vm.vendor");
String vmVersion = System.getProperty("java.vm.version");
System.out.println("Name: " + vmName );
System.out.println("Vendor: " + vVendor );
System.out.println("Version: " + vmVersion );
}
}

 

[Ryan Stewart]

*fixed top post*

This will do what you want..
Obviously, once you have the VM properties, you can do with them as you
please.. Like post them back to a servlet or external service etc..

*snip applet*

That would work, I suppose, but I'm hoping to find something less intrusive.

 

[ByteCoder]

*fixed top post*


*snip applet*

That would work, I suppose, but I'm hoping to find something less intrusive.

Why would that be intrusive? If the applet can't get those properties
due to security restrictions there's no harm done. I can't think of any
other way to do this.

 

[Andrew Thompson]

Ryan Stewart wrote:

Why would that be intrusive? If the applet can't get those properties
due to security restrictions there's no harm done. I can't think of any
other way to do this.

To check what you can and can't find out from an unsigned Applet,
check JTest. <http://www.physci.org/pc/property.jsp>