InetAddress : getByName

package InetAddress;

import java.net.InetAddress;

public class getByName {
    public static void main(String[] args){
        try {
            InetAddress ia=InetAddress.getByName("localhost");
            System.out.println(ia.getHostName());
        } catch (Exception e) {
                System.err.println(e);
        }
    }
}