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.
Hey guys, playing around with ArrayLists and trying to calculate various things with Rainfall using one. However, it keeps throwing exceptions whenever I try to interact with the ArrayList itself and I can't figure out why. Any hints or tips in the right direction would be appreciated, thanks.