UnknownHostException in mac osx

Issue:

java.net.UnknownHostException: abc-026bf227b: abc-026bf227b: nodename nor servname provided, or not known at java.net.InetAddress.getLocalHost(InetAddress.java:1473)

Fix:

Fixed by simple command in vi editor

  echo "127.0.0.1 $HOSTNAME" | sudo tee -a /etc/hosts

This makes and entry in /etc/hosts

127.0.0.1 abc-026bf227b