IP Address to Hostname in Java?

Question

My hosts file (C:\WINDOWS\system32\drivers\etc\hosts) has a bunch of IP Address to host name mappings:

# Switches 192.168.200.254       sw-con-ctrl 192.168.201.253    sw-con-ctrl-2 192.168.201.254       sw-con-ctrl-1 # 192.168.188.1       sw-con-ctrl-ylw-1 # 192.168.189.1       sw-con-ctrl-blu 192.168.190.62        access-console  # Routers 192.168.21.1          rtr1 192.168.22.1          rtr2 

I am trying to find a way to convert from an IPAddress to the HostName programmatically through Java APIs.

Pseudocode:

IPAddress ip = new IPAddress("192.168.190.62"); String host = ip.getHost(); System.out.println(host);  //prints "access-console" 

Answer 1

I tried the code from here and it works. Namely:

  InetAddress addr = InetAddress.getByName("192.168.190.62");   String host = addr.getHostName();   System.out.println(host);