Why do I have problems running Java, after updating to macOS 10.12 (Sierra)?
Our advice is don’t rely using Java 6 on Sierra until Apple clarify whether it will be officially supported. Java 7 and 8 are officially supported in OS X 10.12 Sierra and if you don’t need Java 6, we highly recommend updating to Java 7 or 8 because Java is notoriously insecure and older versions are particularly vulnerable to attack and bugs. There are two steps involved in getting NetBeans 8.2 to work: Download and install JDK 1.8 if it is not already on your machine: This answer describes how to do that for openjdk 1.8 on High Sierra. Alternatively, you can download Oracle JDK 1.8. The installation instructions are here. Once JDK 1.8 is installed, update the file netbeans.conf. The screen shots and instructions below are for Java 8 Update 65 (8u65). If you are installing another version, make sure you change the version number appropriately. Example: For Java 8 Update 65 (8u65) the file to download is jre-8u65-macosx-x64.pkg. Notifications about disabled Java and restoring prompts.
This article applies to:- Platform(s): macOS
- Java version(s): 8.0
macOS Sierra was released by Apple in September 2016. Java is compatiblewith this version, however, few Java issues have been reported onSierra. We are actively working on identifying and resolving those issues.
A few of the issues that we are currently addressing are listed below.
JVM throws NullPointerExceptions on macOS Sierra 10.12
On macOS Sierra 10.12, if a user presses modifier keys (such as Command, Alt, Shift) while an applet is running in a browser, an error box named “Internal Error” might be displayed. It will also show the “exec” icon in the macOS dock. The user can dismiss the applet, or try to rerun the applet while not pressing a modifier key. See JDK-8165867.
Trackpad scrolling of text is very fast
A bug in macOS Sierra has caused scrolling with the trackpad to to be very fast. A workaround is using a mouse, or updating to Java version 8 Update 121 (released January 2017) or later versions.
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