To install an earlier version of the JRE, you must first uninstall the current version. To determine the current JRE version installed on your system, see Determining the JRE Version Installed on macOS. However, the system will not replace the current JRE with a lower version. When you install the JDK, it also installs the JRE. Administrator privileges are required to install the JDK and JRE on macOS. Installing the JDK and JRE on macOS is performed on a systemwide basis for all users. You cannot install Java for a single user. The Java runtime environment you selected is not the required version.The following are the system requirements for installing the JDK and the JRE on macOS: In LO > Preferences > Advanced, I clicked “Add”, navigated to /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/jre/, and clicked OK. I copied this folder to /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/ and renamed it “jre”.
Next, I downloaded jre-9_osx-圆4_ and uncompressed it. Apparently, Oracle’s installer installs the JRE to support Java applets in web browsers, but not to support applications. Still no “jre” subfolder in /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/, where it should be, and still no JRE listed in LO > Preferences > Advanced. I then downloaded the latest JRE for macOS (jre-9_osx-圆4_bin.dmg) from Oracle’s website and ran that installer. In LibreOffice > Preferences > Advanced, I checked “Use a Java runtime environment”, but no JRE was listed below under “Vendor/Version/Features.” After doing so, I did not find a “jre” subfolder in /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/. I have downloaded and installed the latest JDK for macOS (jdk-9_osx-圆4_bin.dmg) from Oracle’s Java website. On my brand-new iMac Retina 5K 27" 2017 running macOS Sierra 10.12.6, I am not able to run Base.
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