Answer 1

In Java, you can use InetAddress.getLocalHost() to get the Ip Address of the current Server running the Java app and InetAddress.getHostName() to get Hostname of the current Server name.

package com.crunchify.tutorials;

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

/**
* @author Crunchify.com
*/

public class CrunchifyGetIPHostname {

public static void main(String[] args) {

InetAddress ip;
String hostname;
try {
ip = InetAddress.getLocalHost();
hostname = ip.getHostName();
System.out.println("Your current IP address : " + ip);
System.out.println("Your current Hostname : " + hostname);

} catch (UnknownHostException e) {

e.printStackTrace();
}
}
}