how to get mac address

[lynn fann]

How can i get the local machine's MAC address?

[Scott Johnson]

If you're running JSE6:

NetworkInterface.getHardwareAddress()

If you're running an earlier JVM, there is no pure Java solution. You could do something like this on Linux:

Runtime.getRuntime().exec("/sbin/ifconfig");

and parse the output.

or on Windows:

Runtime.getRuntime().exec("cmd.exe -c ipconfig -all");

[lynn fann]

i am working on windows and my jdk is 1.4. If i would llike to use JNI, how should i go about it.

I have try the code NetworkInterface.getHardwareAddress(), but it return me an error saying cannot resolve symbol, getHardwareAddress()


if i using this code:
Runtime.getRuntime().exec("cmd.exe -c ipconfig -all");

how to get the MAC address. I have done a system.out.print for the statement, i.e. System.out.println(Runtime.getRuntime().exec("cmd.exe -c ipconfig -all").toString());

i get the result as "java.lang.Win32Process@194df86"


[ December 19, 2006: Message edited by: lynn fann ]
[ December 19, 2006: Message edited by: lynn fann ]

[Edwin Dalorzo]

The Runtime.exec(String) method returns a java.lang.Process object. Use that object to get an InputStream and obtain console results.

For instance:

 
Process ps = Runtime.getRuntime().exec(...);
InputStream in = ps.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line = null;
while( (line=reader.readLine())!=null){
   System.out.println(line);
}
reader.close();

I hope that helps!

[lynn fann]

hi Edwin,

thanks, it helps.