Revisions

  • 95178a Mon Sep 15 13:53:55 -0700 2008
gist: 10938 Download_button fork
public
Description:
Generate a GUID composed of username, machine name, and random int
Public Clone URL: git://gist.github.com/10938.git
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UsernameMachinenameGUIDGenerator.java #
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import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Map;
import java.util.Random;
 
 
public class GetMachineName {
 
	/**
	 * @param args
	 */
	public static void main(String[] args) {
 
		for (int i = 0; i < 10; i++) {
			String uid = getMachineAndUserIdentifer();
			System.out.println("UID:" + uid);
		}
	}
 
	private static String getMachineAndUserIdentifer() {
		String machineName = null;
		String userName = null;
		Integer microGUID = null;
 
		//Username
		Map<String,String> env = System.getenv();
		userName = env.get("USER");
 
		//Machine name
		try {
			machineName = InetAddress.getLocalHost().getHostName();
		} catch (UnknownHostException e) {
			throw new IllegalStateException("Hostname cannot be found, but is required.", e);
		}
 
		//GUID random number
		microGUID = new Random().nextInt();
		microGUID = Math.abs(microGUID);
 
		return userName + "@" + machineName + "@GUID" + microGUID;
	}
 
}