IdentifyHostNameIP.java

Example command window: 

C:\ece538\javafx_PP\ch31>java IdentifyHostNameIP udayton.edu
Host name: udayton.edu IP address: 131.238.72.77

C:\ece538\javafx_PP\ch31>java IdentifyHostNameIP johnloomis.org
Host name: johnloomis.org IP address: 50.63.90.1

C:\ece538\javafx_PP\ch31>java IdentifyHostNameIP localhost
Host name: localhost IP address: 127.0.0.1

IdentifyHostNameIP.java

import java.net.*;

public class IdentifyHostNameIP {
  public static void main(String[] args) {
    for (int i = 0; i < args.length; i++) {
      try {
        InetAddress address = InetAddress.getByName(args[i]);
        System.out.print("Host name: " + address.getHostName() + " ");
        System.out.println("IP address: " + address.getHostAddress());
      }
      catch (UnknownHostException ex) {
        System.err.println("Unknown host or IP address " + args[i]);
      }
    }
  }
}

Maintained by John Loomis, updated Mon Mar 26 11:52:14 2018