I’ll let you in on a little secret about how to increase your chances of getting accepted to speak at a conference. It is as simple as this: Submit Early!
Most conferences either accept talks on a rolling basis or have an expressed early-bird acceptance. Since most speakers tend to submit at a date near the CFP deadline, the amount of talks available to choose from is less for early-bird selections than for the regular selection after the CFP has ended. Which in turn increase YOUR chances at getting accepted if you are among those few submitting early.
The early-bird deadline for Open Community for Java is set to May 31, 2024. Submit your talk before that date to increase your chances of getting accepted. You can still submit more talks up until the final submission deadline of June 10, 2024.