Getting the computer name using Windows in Java.

public String getComputerName_Windows() {
 Map env = System.getenv();
 if (env.containsKey("COMPUTERNAME")) {
  return (String) env.get("COMPUTERNAME");
 }
 return "unknown";
}

Example Demo:

package zexample;

import java.util.Map;

/**
 *
 * @author http://titodev.blogspot.com/
 */
public class zExample {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        System.out.println("Computer name: " + getComputerName_Windows());

    }
        
    public static String getComputerName_Windows() {
        Map env = System.getenv();
        if (env.containsKey("COMPUTERNAME")) {
            return (String) env.get("COMPUTERNAME");
        }
        return "unknown";
    }
    
}