Java InetAddress.getByAddress example

The InetAddress.getByAddress() method is a static method in the java.net.InetAddress class that returns an InetAddress object given the raw IP address. The raw IP address is specified as a byte array.

Here is an example of how to use the InetAddress.getByAddress() method:

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

public class InetAddressExample {
    public static void main(String[] args) {
        try {
            // Create a byte array for the IP address 192.168.0.1
            byte[] ipAddress = {(byte) 192, (byte) 168, 0, 1};

            // Get the InetAddress object for the IP address
            InetAddress address = InetAddress.getByAddress(ipAddress);

            // Print the hostname and IP address
            System.out.println("Hostname: " + address.getHostName());
            System.out.println("IP address: " + address.getHostAddress());
        } catch (UnknownHostException e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}

Output:

Hostname: 192.168.0.1
IP address: 192.168.0.1

Note that the getByAddress() method can throw a UnknownHostException if the IP address is invalid or if a hostname could not be resolved for the given IP address. It is recommended to handle this exception by enclosing the call to getByAddress() in a try-catch block.