Java Platform, Standard Edition Installation Guide
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11 JRE 8 Installation for OS X

This page describes how to install and uninstall JRE 8 on OS X computers.

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:

  • Any Intel-based computer running OS X 10.8 (Mountain Lion) or later.

  • Administrator privileges.

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 Installation Instructions

The JRE installation includes the JavaFX Runtime which is incorporated into the same directory structure.

Depending on your processor, the downloaded file has one of the following names:

  • jre-8uversion-macosx-amd64.dmg

  • jre-8uversion-macosx-x64.dmg

Where version is 6 or later.

  1. Download the file.

    Before the file can be downloaded, you must accept the license agreement.

  2. From either the Downloads window of the browser, or from the file browser, double click the file.dmg to launch it.

    A Finder window appears containing an icon of an open box and the name of the .pkg file.

  3. Double click the package icon to launch the Install app.

    The Install app displays the Introduction window.


    Note:

    In some cases, a Destination Select window appears. This is a bug, as there is only one option available. If you see this window, select Install for all users of this computer to enable the Continue button.


  4. Click Continue.

    The Installation Type window appears.

  5. Click Install.

    A window appears that says "Installer is trying to install new software. Type your password to allow this."

  6. Enter the Administrator login and password and click Install Software.

    The software is installed and a confirmation window appears.

  7. After the software is installed, delete the .dmg file if you want to save disk space.

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.

Remove one directory and one file (a symlink), as follows:

  • Navigate to /Library/Internet Plug-Ins and remove the JavaAppletPlugin.plugin directory.

  • Navigate to /Library/PreferencePanes and remove JavaControlPanel.prefpane.

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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