Starting Network Programming in Java - An Introduction to Network Programming with Java - page 11

Fig. 2.1 Using method getByName to retrieve IP address of a specifi ed host

It is sometimes useful for Java programs to be able to retrieve the IP address of
the current machine. The example below shows how to do this.

Example

import java.net.*;
public class MyLocalIPAddress
{
public static void main(String[] args)
{
try
{
InetAddress address =
InetAddress.getLocalHost();
System.out.println(address);
}
catch (UnknownHostException uhEx)
{
System.out.println(
"Could not fi nd local address!");
}
}
}

Output from this program when run on the author's offi ce machine is shown in
Fig. 2.2 .