Getting the hostname of local computer in Java.

public String getHostName() {
 try {
  java.net.InetAddress addr = InetAddress.getLocalHost();
  return addr.getHostName();
 } catch (UnknownHostException ex) {
  System.out.println("Error: " + ex.getMessage());
 }
 return "unknow";
}

Example Demo:

package zexample;

import java.net.InetAddress;
import java.net.UnknownHostException;

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

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("Hostname of local machine: " + getHostName());
    }

    public static String getHostName() {
        try {
            java.net.InetAddress addr = InetAddress.getLocalHost();
            return addr.getHostName();
        } catch (UnknownHostException ex) {
            System.out.println("Error: " + ex.getMessage());
        }
        return "unknow";
    }

}