This week's book giveaway is in the Programmer Certification forum. We're giving away four copies of OCP Oracle Certified Professional Java SE 11 Programmer I Study Guide: Exam 1Z0-815 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
It is a little difficult than what I thought. I did a mock test on 483, got 93%(25/57), on 484 90%(51/56). But the real test for 483 has a lot of exposition about details. I didn't prepare for it. Anyway, I passed it. Thanks for information from this forum.