Interrogating your system with Java Applets

If a machine has several network adapters is it possible in a Java Applet to interrogate the machine and determine, which adapters are currently available and which one is currently being used, so the user can automatically select the prefered one.
I ask this question becuase we have a web application that is used by several mobile test engineers, who connect to the web application through one adapter while on site and another when they are in the office. These engineers want to be able to automatically select which adapter to use before the application starts i.e They want to implement some kind of pop up box in the application that lists the available network adapters on the machine and gives them the option to choose which one to use.
Any help/ideas much appreciated.

If the standard Java API has a way, then yes, but possibly it would need to be a signed applet.
Look at the java.net package...

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