Oracle has announced a new exam, the 1Z0-819 taking effect 1st October 2020. This new exam takes the content
from the 1Z0-815 exam as well as the 1Z0-816 exam and combines them into one exam. This is good for you as you only need to sit one exam to become Java certified.
1Z0-819 exam would be a combination of topics covered in the two exams.