※ Shipping is unavailable from December 31st to January 3rd. A set of the best preparation text and question collection for obtaining the Java SE 11 Programming certification. Oracle Certified Professional Exam Study Guide - Title: Java Programmer Gold SE 11 - ISBN: 978-4-7981-6202-7 - First Edition: January 27, 2021 - Price: 4300 yen (excluding tax) - Title: Java Programmer Gold SE 11 Question Collection - ISBN: 978-4-7981-6201-0 - First Edition: March 8, 2021 - Price: 3600 yen (excluding tax) It's clean because I haven't studied (lol)