How do I get what os the computer is running with java?

Question

Possible Duplicate:
How do I programmatically determine operating system in Java?

in Java, how do I get what OS type (Mac, Windows, Linux, etc) that my java applet is being run in?

Thanks in advance ;D

Answer 1

The system property os.name provides the name of the operating system.

Answer 2

public class OpertingSystemInfo 
{
  public static void main(String[] args)
  {
    String nameOS = "os.name";  
    String versionOS = "os.version";  
    String architectureOS = "os.arch";

    System.out.println("\n  The information about OS");
    System.out.println("\nName of the OS: " + System.getProperty(nameOS));
    System.out.println("Version of the OS: " + System.getProperty(versionOS));
    System.out.println("Architecture of THe OS: " + System.getProperty(architectureOS));
  }
}

http://www.roseindia.net/java/beginners/OSInformation.shtml

Answer 3

System.out.println(System.getProperties().get("os.name"));