The following are the system requirements for installing the JDK and the JRE on macOS:
Running Java Jar file on Mac OS X. Ask Question Asked 9 years, 1 month ago. Active 9 years, 1 month ago. Viewed 22k times 4. I have a Java application that is running perfectly under windows, i go to the command line after building the project, execute the command. Java -jar FileName.jar. Reddit's community for users, developers, and hackers of Mac OS X – the desktop operating system from Apple. Created Jan 25, 2008.
This page describes how to install and uninstall JRE 8 on OS X computers.
Macaroni is a tool which handles regular maintenance for Mac OS X, including the Mac OS X repair privileges process as well as Unix-style maintenance. You could do this yourself, but don't you have more interesting things to do with your time?
Some of these instructions are based on recommendations from other Mac users who have compiled NEURON under macOS. Please let us know if you have additional suggestions. In the following steps, you're going to use the Terminal application a lot. Apr 04, 2017 A random program that I installed reset the default application (Java) for.jar files on my Macbook, and to reset the behaviour in Mac OSX took a bit more work than I thought. Turns out the “Java Launcher” isn’t in the list of applications that you can select from, in the “Open With” list.
This page has these topics:
See 'JDK 8 and JRE 8 Installation Start Here' for general information about installing JDK 8 and JRE 8.
See 'OS X Platform Install FAQ' for general information about installing JRE 8 on OS X.
System Requirements
Observe these requirements:
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Note that installing the JRE on OS X is performed on a system-wide basis, for all users, and administrator privileges are required. You cannot install Java for a single user.
Only one JRE can be installed at a time. The system will not install a JRE that has a lower version than the current version. If you wish to install a lower version of the JRE, uninstall the current version as described in 'Uninstalling the JRE'.
Installing a JRE from Oracle will not update
java -version symlinks or add java to your path. To be able to do this, you need to install the JDK.
JRE Downloaded File
Depending on your processor, the downloaded file has one of the following names, where
version is the update number:
Installing JRE 8u40
If you are installing JRE 8u40, then follow these steps:
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Determining the Installed Version of the JRE
If you have not yet installed Apple's Java OS X 2012-006 update, then you are still using a version of Apple Java 6 that includes the plug-in and the Java Preferences app. See 'Note for Users of OS X that Include Apple Java 6 Plug-in'.
Only one JRE can be installed. Installing a JRE removes the previously installed JRE. The JRE version used by the system can be determined in one of two ways:
The system will not install a JRE that has a lower version than the current version. If you want to install a lower version, first uninstall the existing version.
Uninstalling the JRE
To uninstall the JRE, you must have Administrator privileges and execute the remove commands either as root or by using the sudo(8) tool.
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Remove one directory and one file (a symlink), as follows:
Do not attempt to uninstall Java by removing the Java tools from
/usr/bin . This directory is part of the system software and any changes will be reset by Apple the next time you perform an update of the OS.
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