java Exception in thread "main" java.net.UnknownHostException: Test: Test: unknown error OS ubuntu

Question

This error is related to my previous question where I had an error with InetAddress.getLocalHost(). I found a suggestion to add an entry in /etc/hosts:

myip     localhost
127.0.0.1   localhost
127.0.1.1   test5

but my error is still not resolved.

My code :

import java.net.*;

public class InetAddressTest {
    public static void main(String args[]) throws UnknownHostException {
        InetAddress Address = InetAddress.getLocalHost();

    }
}

Error :

Exception in thread "main" java.net.UnknownHostException: Sachin: Sachin: unknown error
    at java.net.InetAddress.getLocalHost(InetAddress.java:1484)
    at InetAddressTest.main(InetAddressTest.java:6)
Caused by: java.net.UnknownHostException: Sachin: unknown error
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:907)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1302)
    at java.net.InetAddress.getLocalHost(InetAddress.java:1479)
    ... 1 more

Answer 1

Your host name is Sachin. The exception in thread "main" java.net.UnknownHostException: Sachin: Sachin: unknown error show that.

Add Sachin to /etc/hosts

myip     localhost
127.0.0.1   localhost
127.0.1.1   test5
127.0.0.1   Sachin