AP Computer Science A Course Description—2014
This is the core document for this course. It clearly lays out the course content and describes the exam and the AP Program in general.
Exam Appendix - Java Quick Reference
The Exam Appendix - Java Quick Reference lists the accessible methods from the Java library that may be included on the exam.
Free-Response Questions from the 2018 AP Computer Science A Exam
New Resources Coming in 2019