do i need to restart mac for java to work

Do I Need To Restart For Java To Work Upgrade Has Undesirable

ImageJ2 includes the latest version of ImageJ1 under the hood so that existing macros, plugins and scripts will still run the same as before.

However, one major goal of the ImageJ2 project is to break this limit.

ImageJ2 uses the ImgLib2 library as its data model, which has much larger limits on the number of pixels (theoretically: 263 per dimension, up to 231 dimensions, totaling 26331 pixels).

But you will not be able to display them in the user interface yet.

This is similar to (but more powerful than) ImageJ 1.xs virtual stacks feature.

In the future we hope to integrate BDV-driven UI technology more completely into ImageJ core.

So mixing and matching IJ1 and IJ2 functionality is tricky here.

But we are working to lift these restrictions as time goes on.

If this does not result in ImageJ using the expected Java version, check the Environment Variables ( Control Panel System and Security System Advanced Settings Advanced Environment Variables ) for the variable JAVAHOME.

Update or create this variable as needed; its value should be the desired JDK or JRE that you would like to use for ImageJ (for instance: C:Program FilesJavajdk1.8.0172).

See also Java environment variable setup.

Specifying Apple Javas with this flag will give an error message about being unable to find libserverlibjvm.dylib.

However, ImageJ will fall back to Apple Java if no other Java installations are available.

Here is a sample invocation for Fiji (copy and paste into Terminal).

J6bin(IJHOMEContentsMacOSImageJ-macosx --dry-run perl -pe s -Djava.ext.dirs.

D -D).

For example, Ubuntus Unity user interface will not allow you to Pin to Launcher in this case.

Double-click Run Shell Script in the LibraryUtilities folder and replace the text content cat with the following.

However, there are cases where your ImageJ may report itself as up to date but still be missing critical files, or have mismatching versions (e.g., the dreaded NoSuchMethodError ).

Consider changing the StatusAction to Install for these items, especially any.jar files that are flagged with Not installed status.

Consider changing the StatusAction to Update for these items, especially any.jar files that you did not intentionally modify.

These files were likely added manually (e.g., if you installed additional plugins manually; see How do I install additional plugins below).

Consider deleting these files if you do not need them, especially any.jar files of unknown origin or conflicting file names.

And after restarting ImageJ, you might want to run Help Update.

Not only does this install the plugins for you automatically, but you will also be notified of any updates whenever they are released.

Do I Need To Restart For Java To Work Upgrade Has Undesirable

Then if the upgrade has undesirable consequences, switch back to the old copy.

ImageJ2 is redesigned from the ground up to meet the same needs, yet engineered with future-proof flexibility to adapt to researchers growing requirements (new data types, higher dimensionality, huge images, etc.).

Do I Need To Restart Mac For Java To Work