Get the problem sets and resources for 2014-2015 ap cs here
The files are as follows:
(1) APSummerWorkSet14-15.pdf - The five summer problem sets. NOTE: They have staggered due dates over the summer!
(2) APTopicList.pdf - A complete list of all AP Computer Science topics for the year
(3) QuickReferenceRevA - A quick reference covering much of Java's syntax
I also highly recommend the following online materials:
(1) Think Java: http://www.greenteapress.com/thinkapjava/html/index.html
(2) Princeton's Intro Java Course: http://introcs.cs.princeton.edu/java/home/
(3) My youtube playlist for the summer problem sets.