Question

Is it possible to get the name of the currently logged in user (Windows/Unix) and the hostname of the machine?

I assume it’s just a property of some static environment class.

I’ve found this for the user name

com.sun.security.auth.module.NTSystem NTSystem = new         com.sun.security.auth.module.NTSystem(); System.out.println(NTSystem.getName()); 

and this for the machine name:

import java.net.InetAddress; ... String computerName; ... try {     computerName = InetAddress.getLocalHost().getHostName(); }  catch(Exception ex) {     ... } 

Is the first one just for Windows?

And what will the second one do, if you don’t have a hostname set?

Answer 1

To get the currently logged in user:

System.getProperty('user.name'); //platform independent  

and the hostname of the machine:

java.net.InetAddress localMachine = java.net.InetAddress.getLocalHost(); System.out.println('Hostname of local machine: ' + localMachine.getHostName());