1) brew cask install java 2) java -version java version '1.8.0131' Java(TM) SE Runtime Environment (build 1.8.0131-b11) P.S - Cask is an extension to Homebrew that is intended to manage large Mac binaries and graphical applications, but using the Homebrew interface.
Apple Java 2017-001 - For OS X 10.7 through macOS 10.13. Download the latest versions of the best Mac apps at safe and trusted MacUpdate.

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This page describes how to install and uninstall JDK 8 for 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.

May 02, 2019 Download the Java SE 6 for OSX (click the Download button) Once the download finishes, install the dmg file following the onscreen instructions. When you have Java Runtime 6 installed on your Mac, you can launch Adobe CS5 (or any other app that require Java 6 runtime).

See 'OS X Platform Install FAQ' for general information about installing JDK 8 on OS X.

System Requirements

Observe the following requirements:

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

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:

jdk-8uversion-macosx-amd64.dmg
jdk-8uversion-macosx-x64.dmg

Where 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 .dmg file to launch it.
A Finder window appears containing an icon of an open box and the name of the .pkg file.

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.

Click Continue.
The Installation Type window appears.
Click Install.
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.
Refer to http://www.oracle.com/technetwork/java/javase/downloads/jdk-for-mac-readme-1564562.html for more information about the installation.
After the software is installed, delete the .dmg file 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 java_home tool:

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.

Because programmers can’t get enough caffeine

Which Java You Got?
Different Javas
Install Jenv to manage multiple Versions of Java
Update Java

There are several ways to install Java.This is a deep dive into the various editions to equip you to debug JVM installation issues.

Which Java You Got?

Open a Terminal session.
Shell scripts check if Java is available by:
Alternately, the older form is:
Either way, the response:
PROTIP: File “java” in the above path is a binary file.
To see what Java VM you have already installed:
PROTIP: -version is a non-standard parameter. Most other programs use either the -v flag or two-dash --version with the longer-form parameter name.
A sample response:
List which versions are installed on your machine:
PROTIP: On Macs, all known JVM’s are located at:
/Library/Java/JavaVirtualMachines/
NOTE: This directory is at the root for the whole machine, not a particular user’s home folder.
The response on my machine:
PROTIP: The Java program looks for the $JAVA_HOME environment variable to obtain files:
echo $JAVA_HOME
Sample response:
PROTIP: This command is my preferred way to see what a machine has becauseif you invoke java or javac, if it’s not installed, MacOS prompts you to install the JDK. Clever. But don’t do it if you want other version of Java.
Java is used by Groovy, Grails, Spring Boot, and others.
PROTIP: Developers use the JDK rather than the JRE (Runtime Environment) in order to get the javac compiler. See what version of the Java Compiler is installed:
A sample response:
Additional details are provided with this command:
That’s a capital -V.
The response on my machine:
Alternately:
Apple Java
PROTIP: The version that comes installed on Apple Macs is obsolete and thus does not have the latest security patches. But do NOT delete the default version.
But if you did uninstall it, to re-install Java 6 for OS X 2014-001,it can be obtained fromhttps://support.apple.com/kb/DL1572?locale=en_US
Different Javas
https://en.wikipedia.org/wiki/List_of_Java_virtual_machines lists all the known Java compilers.Several organizations work on OpenSDK specs from AdoptOpenJDK and certified for Java SE TCK compliance on x64 reference architecture systems
- When Oracle acquired Sun, the jdk (Java Development Kit) was one of the products obtained. Versions are downloaded directly from Oracle from http://jdk.java.net.
- https://adoptopenjdk.net/ has both 8, 11, and 13 running the tradition “HotSpot” JVM and the more recent and faster “OpenJ9” JVM. To install the latest (v13):
- Azul Zuludownloads for macOS, from a company that also sells Java optim

System Requirements

JDK Installation Instructions

Determining the Default Version of the JDK

Uninstalling the JDK

Which Java You Got?

Apple Java

Different Javas

Download Java 8 Mac Osx