This isn’t a complicated issue to fix, but it is an indirect one. When you visit the download website to update Java, you find that the issue isn’t resolved! You’re still getting the same pop-up. Without a compatible Java command-line tool for these software, you’ll get this pop-up every time you turn on your Mac computer. Older software such as Adobe Photoshop and Illustrator requires legacy Java support. The reason you’re receiving this message is due to the removal of Java support in newer versions of OS X for security reasons.

It says, “To use the java command-line tool, you need to install a JDK.” It asks you to click “More Info” and visit the JDK (Java Developer Kit) download website.

After upgrading to a newer version of Mac OS X (Yosemite 10.10 and El Capitan 10.11) or macOS (Sierra 10.12 and High Sierra 10.13), you may end up getting an annoying new pop-up message whenever you start your computer.