sockets - getHostAddress() and getInetAddress() in Java

Question

I am creating TCP socket application. In server side,

ss = new ServerSocket(10000);
Socket socket = ss.accept();
String remoteIp = socket.getInetAddress().getHostAddress();
String RemotePort = ":"+socket.getLocalPort();

I am a little bit confused about the last two lines, getInetAddress() used to return the address of socket connect to, namely is the address of host? and then why we need a getHostAddress()?

Answer 1

socket.getInetAddress() returns an InetAddress object that contains the IP address of the remote machine.

InetAddress.getHostAddress() returns a String object with the textual representation of that address.

So, to end up with a String you can print, that's how you do it.

Edit: In case you're not familiar, this is called 'method chaining'. It's the same thing as saying:

InetAddress addy = socket.getInetAddress();
String remoteIp = addy.getHostAddress();