JVM question

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Inieponied Guy - 06 Feb 2006 18:49 GMT

Hi to all,

I need to know how a browser open an applet, or, better, how a browser
invoke the virtual machine; the browser open the JVM through a dll
specified in the windows registry?
I need this informations because i have to intercept the call of an
applet and pass it from a bytecode verifier build by myself before
giving the applet itself to the JVM.

Thanks to all

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Roland de Ruiter - 11 Feb 2006 11:03 GMT

> Hi to all,
>
[quoted text clipped - 6 lines]
>
> Thanks to all

Don't know how the browser invokes the JVM, but you can specify runtime
parameters, however.

Open the Java control panel (in Windows, Start > Control Panel > Java)
and select the 'Java' tab. Press 'View' button of the Applet Runtime
Settings, and add the required parameters in the 4th column (it's
editable).

You can use any of the parameters supported by the java executable
(<http://java.sun.com/j2se/1.5.0/docs/tooldocs/windows/java.html>), like
-agentlib:YourBytecodeVerifier or -javaagent:SomePathToYourJAR.

Make sure, however that the parameter you supply are correct, otherwise
your browser will die when it tries to open the first applet. [It
happened to me when I had a typo in the parameters to debug an applet in
the browser.]

Regards,

Roland

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Inieponied Guy - 11 Feb 2006 15:52 GMT

Thank you very much, now I can finally start the project

Alessio

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