Java For Mac Os Capitan

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Apple has posted notice that Mac OS X 10.11 (El Capitan) will be the last OS X release that supports Java 6, and as such, recommends developers whose applications depend on Java 6 to migrate their apps to a newer Java version provided by Oracle. Os x el capitan free download - Apple Mac OS X El Capitan, Apple Mac OS X Mavericks, R for Mac OS X, and many more programs. Apple Java for OS X 10.6. Update Java components. Free User rating.

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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 Forum.

Java Download Mac Os

At any time, you can verify which Javas are installed on your system using this script.

Java mac os capitan

How do I run ImageJ on Yosemite?

Install the Java 8 JRE or Java SE 8.

Java For Mac Os X El Capitan

How do I run ImageJ on El Capitan?

Java For Mac 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:

Java Mac Os Capitan

  1. Try installing the Java SE JDK.
  2. If that does not work, see this guide for steps which could get things working again.
  3. Alternately, ImageJ still works on El Capitan with Java 6 (see above).