i passed my OCA exam on jan 6,2017 with 97% and on feb 24,2017 passed OCP with 100%... I studied java for 4 months continues.. I would like to share my experience.. Most of the exam questions are tricky i would recommend you the books i referred the OCA/OCP java se7 Programmer study Guide by Kathy Sierra and Bert Bates but unforfunately this book doesnt cover all the new topics included in java 8 and the most important is the OCA Java SE 8 Jeanne Boyarsky. I studied chapterwise and solved all the textbook problems . I was very much focused because i wanted to finish it in one shot. Exam questions are mixed some are very simple and some are time consuming and others are hard.. Inheritance and method overloading and overriding ll b very useful even for OCP . Most of the questions were on loops so try to get it rite some of them ll b time consuming so try to develop speed. Had only one question on GC. Dont lose hope or panic. Some topics take time to digest but it over and over.