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Use Homebrew.this will install the latest jdk: brew cask install java If you want to manage multiple versions of Java on your Mac, consider using jenv. I've tried adding a symbolic link to make it look like 1.8 is in the /System/Library.

This topic includes the following sections:

System Requirements for Installing the JDK on macOS

The following are the system requirements for installing the JDK on macOS:

• Any Intel-based computer running macOS.

• Administrator privileges.

  You cannot install Java for a single user. Installing the JDK on macOS is performed on a systemwide basis for all users. Administrator privileges are required to install the JDK on macOS.

Determining the Default JDK Version on macOS

When starting a Java application through the command line, the system uses the default JDK.

You can determine which version of the JDK is the default by entering java -version in a Terminal window. If the installed version is 12 Interim 0, Update 0, and Patch 0, then you see a string that includes the text 12. For example:

To run a different version of Java, either specify the full path, or use the java_home tool. For example:

$ /usr/libexec/java_home -v 12 --exec javac -version

Installing the JDK on macOS

1. Download the JDK .dmg file, jdk-12.interim.update.patch-macosx-x64.dmg.

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

2. From either the browser Downloads window or from the file browser, double-click the .dmg file to start it.
   A Finder window appears that contains an icon of an open box and the name of the .pkg file.
3. Double-click the JDK 12.pkg icon to start the installation application.
   The installation application displays the Introduction window.
4. Click Continue.
5. Click Install.
   A window appears that displays the message: Installer is trying to install new software. Enter your password to allow this.
6. Enter the Administrator user name and password and click Install Software.
   The software is installed and a confirmation window is displayed.

Uninstalling the JDK on macOS

You must have Administrator privileges.

Note:

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 that you perform an update of the OS.

1. Go to /Library/Java/JavaVirtualMachines.
2. Remove the directory whose name matches the following format by executing the rm command as a root user or by using the sudo tool:
   /Library/Java/JavaVirtualMachines/jdk-interim.update.patch.jdk

   For example, to uninstall 12 Interim 0 Update 0 Patch 0:

   $ rm -rf jdk-12.jdk

Installation FAQ on macOS Platform

This topic provides answers for the following frequently asked questions about installing JDK on macOS computers.

1. How do I find out which version of Java is the system default?

When you run a Java application from the command line, it uses the default JDK. If you do not develop Java applications, then you do not need to worry about this. See Determining the Default JDK Version on macOS.

2. How do I uninstall Java?

See Uninstalling the JDK on macOS.

3. After installing Java for macOS 2012-006, can I continue to use Apple's Java 6 alongside the macOS JDK for Java 12?

If you want to continue to develop with Java 6 using command-line, then you can modify the startup script for your favorite command environment. For bash, use this:

$ export JAVA_HOME=`/usr/libexec/java_home -v 12`

Some applications use /usr/bin/java to call Java. After installing Java for macOS 2012-006, /usr/bin/java will find the newest JDK installed, and will use that for all of the Java-related command-line tools in /usr/bin. You may need to modify those applications to find Java 6, or contact the developer for a newer version of the application.

4. Can I restore Apple Java after uninstalling Oracle Java?

Go back to Apple Java using the following instructions:

1. Uninstall Oracle Java by deleting the plug-in file. From a command-line, enter:

   $ sudo rm -rf '/Library/Internet Plug-Ins/JavaAppletPlugin.plugin'

2. Create a symlink using the following command, entered on a single line:

   $ sudo ln -s /System/Library/Java/Support/CoreDeploy.bundle/Contents/JavaAppletPlugin.plugin '/Library/Internet Plug-Ins/JavaAppletPlugin.plugin'

5. What happened to the Java Preferences app in Application Utilities?

The Java Preferences app was part of the Apple Java installation and is not used by Oracle Java. Therefore, macOS releases from Apple that do not include Apple Java will not include Java Preferences.

This tutorial has everything you need to know about installing JDK 8 on Windows.

If you’re new to Java, I’ll show you how to setup the Java Development Kit.

And if you’re a Java pro? I’ll highlight the needed links that you can use to download the installer.

Bottom line:

If you want to get up and running with Java, you’ll love this tutorial.

Java is a computer programming language that is concurrent, class-based and object-oriented. Java applications compile to bytecode (class file) that can then run on a Java Virtual Machine (JVM).

James Gosling created Java at Sun Microsystems. It is currently owned by the Oracle Corporation.

Consult following posts if you are looking to download and install JDK 1.5, JDK 1.6, JDK 1.7, JDK 1.9 or JDK 1.10.

Java can be obtained from the Oracle Java download page. There are a number of different Java packages available, for this tutorial we will be installing Java Standard Edition (SE) on Windows.

In order to be able to compile Java code, we need the Java Development Kit (JDK) package that comes with a Java compiler. The JDK package also comes with a Java runtime environment (JRE) that is needed to run compiled Java code.

Scroll to the Java SE 8u171/ 8u172 section in the middle of the Oracle Java download page and click on the Download button right below JDK. Then look for the Java SE Development Kit 8u172 section.

Here is the direct link to download the jdk 8u172 installer for Windows 32 or 64 bit.

Accept the License Agreement and pick the correct download for your operating system. In this example, we will use the Windows 64 bit version.

Sign in using your Oracle account (or create a new one) and the download should start. Once the download is complete, locate the jdk-8u172-windows-x64.exe file and double-click to run the installer.

Click Next and on the following screen optionally change the installation location by clicking on the Change... button. In this example the default install location of 'C:Program FilesJavajdk1.8.0_172' was kept. From now on we will refer to this directory as: [java_install_dir].

We will not install the public JRE as the JDK Development tools include a private JRE that can run developed code. Select the Public JRE dropdown and click on This feature will not be available. as shown below.

Click Next and then Close to finish installing Java.

In order for Java applications to be able to run we need to setup a 'JAVA_HOME' environment variable that will point to the Java installation directory. In addition, if we want to run Java commands from a command prompt we need to setup the 'PATH' environment variable to contain the Java bin directory.

When using Windows the above parameters can be configured on the Environment Variables panel. Click on the Windows Start button and enter “env” without quotes as shown below.

Environment variables can be set at account level or at system level. For this example click on Edit environment variables for your account and following panel should appear.

Click on the New button and enter “JAVA_HOME” as variable name and the [java_install_dir] as variable value. In this tutorial the installation directory is 'C:Program FilesJavajdk1.8.0_172'. Click OK to to save.

Click on the New button and enter “PATH” as variable name and “%JAVA_HOME%bin” as variable value. Click OK to save.

Note that in case a 'PATH' variable is already present you can add “;%JAVA_HOME%bin” at the end of the variable value.

Jdk 1.8 Mac Os Download

The result should be as shown below. Click OK to close the environment variables panel.

In order to test the above configuration, open a command prompt by clicking on the Windows Start button and typing “cmd” followed by pressing ENTER. A new command prompt should open in which the following command can be entered to verify the installed Java version:

The result should be as shown below.

Jdk For Mac

This concludes the setting up and configuring JDK 1.8 on Windows.

If you found this post helpful or have any questions or remarks, please leave a comment.