This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I tried like you said but it is not working
I know I have made mistake but can't figure out where
and I could not find any satisfactory answer in the link you provided
I tried following commands now
but not working