How the getNetworkInterfaces() of NetworkInterface class works

Hi,
I would like to know how the method getNetworkInterfaces() method in the NetworkInterface class works. Sometimes I get a cached data on the interfaces, sometimes I get an empty Enumeration getting returned. Does this method not get the refreshed values of the NetworkInterfaces??
Thanks
Swami

I would like to know how the method getNetworkInterfaces() method in the NetworkInterface class works.
Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
List<InterfaceAddress> interfaces = new Vector<InterfaceAddress>(1,1);
while(networkInterfaces.hasMoreElements())
interfaces.addAll(networkInterfaces.nextElement().getInterfaceAddresses());
}This code will extract all the interfaces present on your network and add then in a Vector.

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人的生命是有限的，但知识是无限的！
南京众知维测试技术有限公司

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The Class...
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If you want a basic introduction to try/catch blocks, read any introductory text or the tutorials on this site.
Here are some:
Sun's basic Java tutorial
Sun's New To Java Center.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns."
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When you post code, please wrap it in tags so it's legible.

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How the getNetworkInterfaces() of NetworkInterface class works

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