java.net.ProtocolFamily Class in Java
Last Updated :
16 Nov, 2021
ProtocolFamily is a java Interface. The java.net.ProtocolFamily represents a family of communication protocols. Java.net.StandardProtocolFamily implements ProtocolFamily Interface.
public interface ProtocolFamily
Methods of java.net.ProtocolFamily
java.net.ProtocolFamily interface contains only one method:
S.No. | Method | Description | Return Type |
---|
1. | name() | name() method returns the name of the protocol family | String |
Use of ProtocolFamily Interface
S.No. | Package | Modifier and Type | Name | Description |
---|
1. | java.net | class | StandardProtocolFamily | StandardProtocolFamily class defines the standard families of communication protocols. |
2. | java.nio.channels | static DatagramChannel | DatagramChannel.open(ProtocolFamily family) | DatagramChannel.open() static method opens a datagram channel. |
3. | java.nio.channels.spi | abstract DatagramChannel | SelectorProvider.openDatagramChannel( ProtocolFamily family) | SelectorProvider.openDatagramChannel Opens a datagram channel. |
Java Program for Better Understanding of the ProtocolFamily Interface
Java
// Java Program to get Protocol
// family for an IP Address
// import Guava library
import com.google.common.net.InetAddresses;
import java.io.*;
import java.net.*;
class GFG {
public static void main(String[] args)
{
try {
// to get the ip address of
InetAddress ip
= InetAddress.getByName("45.22.30.39");
System.out.println("Host Name is "
+ ip.getHostName());
// getProtocolFamily() will check and return the
// protocol family of the given IP
ProtocolFamily protocolFamily
= getProtocolFamily(ip);
System.out.println("Protocol family of the "
+ ip.getHostName() + " is "
+ protocolFamily);
}
catch (Exception e) {
System.out.println("Some exception"
+ e.getMessage());
}
}
public static ProtocolFamily
getProtocolFamily(InetAddress inetAddress)
{
// to check if address is valid or not
if (InetAddresses.isInetAddress(
inetAddress.getHostName())) {
// if address is valid
// will return the protocol family of the
// address
return StandardProtocolFamily.INET;
}
else {
// address is not valid
System.out.println(
"Address " + inetAddress
+ "is invalid hence can't determine the protocol family");
}
return StandardProtocolFamily.INET;
}
}
OutputHost Name is 45.22.30.39
Protocol family of the 45.22.30.39 is INET