This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Good luck with that. We don't provide full solutions; we are NotACodeMill. But if you search for java web crawler you should be able to move along for now. If you encounter any problems, feel free to ask here.