The Apple Java for OS X 2012-006 1.0 update for Mac OS X 10.7, 10.8 operating systems delivers improved security, reliability, and compatibility by uninstalling the Apple-provided Java applet plug.
I am having a similar problem to what was posted in another thread [https://ask.libreoffice.org/en/questi...] and am unable to select the JRE in LO preferences as described there. There's a lot of apparent misinformation floating around other forums on this topic. Some say you must install JDK to get the functionality needed by LibreOffice, and indicate that you have to then point to the JRE folder in /Library/Java/JavaVirtualMachines/<jdk_version>/Contents/Home/bin/java. But LibreOffice says that that folder does not contain a Java runtime environment. So that's no help.</jdk_version>
Other documentation focuses on the JRE itself rather than JDK. They indicate going to System Preferences and the Java Control Panel therein. I've done that, and have confirmed that my system has the recommended version of Java (Java 8 Update 141) installed and working. Ok, back to LO. When I go into LibreOffice/Preferences/Advanced/Java options, nothing is listed in 'Java runtime environments already installed,' even though as I said, I've just confirmed through System Preferences that it's there.
If I attempt to Add the JRE following the path indicated in the above thread, I can get as far as /Library/Internet Plug-ins/ and no further because JavaAppletPlugin.plugin is, well, a plugin, and it's greyed out because it's not a folder. I can't navigate inside of the package to reach JavaAppletPlugin.plugin/Contents/Home/bin/java.
Anything I'm missing? I really need and want to get some things working in Base and seem to need JRE to make it happen. Ultimately I'll be [trying to] use Spreadsheets to access Base tables, and I can't even seem to get off square 1. Hopefully there's some simple trick or something I've simply missed? Seeking help or guidance. Please, and thank you.
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Platforms | |
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MacOS |
Think different.
macOS (formerly called Mac OS X, then OS X) is Apple's desktop operating system. It is the second most common desktop computing platform after Windows. This page details issues specific to using ImageJ on macOS systems.- 2Troubleshooting
- 2.1ImageJ becomes very slow after running for a while
- 3Frequently Asked Questions
See also the Java 8 page for OS-X-specific issues.
See also the Troubleshooting page.
ImageJ becomes very slow after running for a while
There are several reasons ImageJ can run slowly on macOS.
Java painting bug
On OS X, older versions of Java 8 (prior to 1.8.0_45)—as well as all versions of Java 7 (including 1.7.0_80)—are extremely slow at displaying images. You should either upgrade to the latest version of Java 8, or revert to Java 6 (see 'Frequently Asked Questions' below).
Window menu bar bug
There is a bug in Java 8 on MacOS which causes the application to drastically slow down as many windows are opened and closed over time. Make sure you are using the latest version of Java 8, as well as the latest version of ImageJ.
App Nap
On recent versions of OS X—10.9 'Mavericks' and later—there is an 'App Nap' feature which dramatically slows down applications that are not in the foreground. Leave ImageJ in the foreground while it is processing to avoid this issue. (There are also variousways to disable App Nap on your machine, but we have not had much success with them. If you find a solution that works, allowing ImageJ to run fast in the background, please tell us on the forum!)
No title bar in file chooser dialogs
On macOS 10.11 'El Capitan' and later, the operating system no longer includes a title bar for file chooser dialogs. See e.g. this JDK bug discussing the issue.
As a workaround, you can check 'Use JFileChooser to open/save' in the Edit › Options › Input/Output... dialog.
See also the Frequently Asked Questions page.
How do I run ImageJ with Java 6?
It is unfortunately no longer feasible to install Apple Java 6 on current versions of macOS. However, ImageJ should work OK with Java 8. If you have difficulties, please post on the Image.sc Forum.
At any time, you can verify which Javas are installed on your system using this script.
How do I run ImageJ on Yosemite?
Install the Java 8 JRE or Java SE 8.
How do I run ImageJ on El Capitan?
Unfortunately, El Capitan has some new java-related issues. If you upgraded to El Capitan and your Java 8 installation is not being detected properly:
- Try installing the Java SE JDK.
- If that does not work, see this guide for steps which could get things working again.
- Alternately, ImageJ still works on El Capitan with Java 6 (see above).