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. 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.
The reason you’re receiving this message is due to the removal of Java support in newer versions of OS X for security reasons. Older software such as Adobe Photoshop and Illustrator requires legacy Java support. Without a compatible Java command-line tool for these software, you’ll get this pop-up every time you turn on your Mac computer.
I am running Parallels 10 for Mac, and the Windows version is 10. I can not install Java. I open a browser window and go to Java.com and click through to download the latest Java version. It downloads and then gives me a pop up window to 'install'. I click 'install' and the window just disappears and nothing else happens. You should be able to verify Java is installed and enabled by opening Java from System Preferences and clicking on the Security tab. There should be a checkbox to enable Java content in the browser. Click on the Download button on the Mac support page This will begin downloading the Java installer. You can see the current status of the download on your dock. Once the download is complete, click on the downloads icon on the dock to open the download folder.
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. This isn’t a complicated issue to fix, but it is an indirect one. The problem is that you’re not being routed to the correct download website when you click “More Info.”
Apple could have remedied this issue by programming the “More Info” button to direct you to the right fix. Here are the steps you can take to finally rid yourself of this pop-up:
Fix Java Command-Line Tool Pop-Up on Mac OS X
Installing Java On Mac
Unable To Download Java On Mac
- Download Java for OS X 2017-001 aka Apple’s version of Legacy Java Command-line tool.
- Mount the .dmg disk image file and install Java 6 runtime for OS X.
- Restart your Mac and enjoy the absence of this Java command-line tool error pop-up!