CODEWITHSUNDEEP
javawindows
Noah Cagle
Noah Cagle

Reputation: 459

How to get Windows username in Java?

So what I am trying to do is let my Java find the user's name that windows is logged in with, so when I would say such a method, it would return the users name, like I use it in the User called Noah, java would return "Noah" and if I were on the user Amanda, Java would return "Amanda". How would I do this?

Upvotes: 40

Views: 92291

Answers (4)

Evgeniy Dorofeev
Evgeniy Dorofeev

Reputation: 136012

Two ways

  1. System.getProperty("user.name");

  2. System.getenv("USERNAME");

Both are good for any OS

Upvotes: 21

aaa
aaa

Reputation: 39

NTSystem.getName() also returns SYSTEM when the app runs on a windows service. There is no means to get the username with NTSystem when the app is running on a windows service

Upvotes: 3

user987339
user987339

Reputation: 10707

Try:

String userName = System.getProperty("user.name");

or 

String userName = new com.sun.security.auth.module.NTSystem().getName()

Upvotes: 19

rgettman
rgettman

Reputation: 178263

Lookup the system property "user.name".

String username = System.getProperty("user.name");

Demonstration: Main.java

public class Main {
   public static void main(String[] args) {
      System.out.println(System.getProperty("user.name"));
   }
}

Output:

c:\dev\src\misc>javac Main.java

c:\dev\src\misc>java Main
rgettman

c:\dev\src\misc>

Upvotes: 70

Related Questions