This page describes how to install and uninstall JDK 8 for OS X computers.
This is my first MAC ever and I'm still trying to get the hang of navigating my way around. Anyway, I'm also new to Java and I've been practicing on my Windows PC before it permanently died. Now that I'm on this MAC, I installed my JDK and now I need to set the JAVAHOME environment variable. Java mac free download - Java Update for Mac OS X 10.3.9, Apple Java for OS X 10.6, Apple Java for OS X 10.5, and many more programs.
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 JDK 8 on OS X.
Observe the following requirements:
Any Intel-based computer running OS X 10.8 (Mountain Lion) or later.
Note that installing the JDK 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.
Installing the JDK also installs the JRE. The one exception is that the system will not replace the current JRE with a lower version. To install a lower version of the JRE, first uninstall the current version as described in 'Uninstalling the JRE'.
JDK Installation Instructions
When you install the Java Development Kit (JDK), the associated Java Runtime Environment (JRE) is installed at the same time. The JavaFX SDK and Runtime are also installed and integrated into the standard JDK directory structure.
Depending on your processor, the downloaded file has one of the following names:
version is 6 or later.
Download the file.
Before the file can be downloaded, you must accept the license agreement.
From either the Downloads window of the browser, or from the file browser, double click the
.dmgfile to launch it.
A Finder window appears containing an icon of an open box and the name of the
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.
The Installation Type window appears.
A window appears that says 'Installer is trying to install new software. Type your password to allow this.'
Enter the Administrator login and password and click Install Software.
The software is installed and a confirmation window appears.
http://www.oracle.com/technetwork/java/javase/downloads/jdk-for-mac-readme-1564562.htmlfor more information about the installation.
After the software is installed, delete the
.dmgfile if you want to save disk space.
Determining the Default Version of the JDK
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'.
There can be multiple JDKs installed on a system, as many as you wish.
When launching a Java application through the command line, the system uses the default JDK. It is possible for the version of the JRE to be different than the version of the JDK.
You can determine which version of the JDK is the default by typing
java -version in a Terminal window. If the installed version is 8u6, you will see a string that includes the text 1.8.0_06. For example:
To run a different version of Java, either specify the full path, or use the
For more information, see the java_home(1) man page.
Uninstalling the JDK
To uninstall the JDK, you must have Administrator privileges and execute the remove command either as root or by using the sudo(8) tool.
For example, to uninstall 8u6:
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.
|Operating system||classic Mac OS|
|Type||Java Virtual Machine|
Mac OS Runtime for Java (MRJ, originally Macintosh Runtime for Java) was Apple's proprietary virtual machine for Java-based applications in the classic Mac OS (i.e. versions prior to Mac OS X). Both a runtime environment and a software development kit (SDK) are available.
The runtime environment includes a JIT compiler developed by Symantec, the standard Java class library from Sun, additional classes providing Macintosh-specific functionality, and the Apple Applet Runner (a lightweight application for running Java applets without the overhead of a web browser). A number of web browsers could use MRJ to run Java applets in web pages, including MicrosoftInternet Explorer, iCab and HotJava.
The SDK includes ports of most of the tools from Sun's Java Development Kit (in the form of MPW tools and Macintosh applications), additional tools for packaging Java applications as double-clickable Macintosh applications, libraries for Macintosh-specific functionality, and documentation for the MRJ-specific classes and tools.
MRJ v2.2.5 was compatible with Sun's Java Development Kit version 1.1.8.
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Since the transition to Mac OS X, Apple has discontinued MRJ and instead maintains and distributes a port of Oracle'sHotSpot Java virtual machine.
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- Java 1.0.2 with Mac OS Runtime for Java v 1.5.1 
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- ^Cohen, Peter (1 June 2001). 'New Mac OS Runtime for Java available for Mac OS 9'. PCWorld. Retrieved 30 October 2017.
- Apple.com - Java at the Wayback Machine (archived June 5, 2009)