Once the Java Puzzle Ball MOOC officially ends, you won't find the course's tile in Oracle Learning Library's Event Calendar. Instead, follow these steps to access the course page:
1) Go to oracle.com/oll and login with the email ID you used to register for the course.
2) Select the My Library icon from the left (the third icon down, it looks like a person):
3) Click on Events:
4) Click the "Course Page" button for the Oracle Developer MOOC: Java Coding & Concepts with a Game: