How can I bind serversocket to specific IP?

Question

If I have a String representing an IP address (IPv4 or IPv6) how can I create a ServerSocket and bind to this IP without caring if the IP passed in, is IPv4 or IPv6?
I see that there is a constructor:ServerSocket(int port, int backlog, InetAddress bindAddr) but InetAddress does not seem to offer any constructors and its subclasses have names specific to IPv4 and IPv6.
So how can I bind the socket to the IP?

Answer 1

You can use the factory method INetAddress.getByName. It'll figure out which subclass to use. For example:

InetAddress addr = InetAddress.getByName("127.0.0.1");
// or
InetAddress addr = InetAddress.getByName("::1");

// and now you can pass it to your socket-constructor
ServerSocket sock = new ServerSocket(1234, 50, addr);