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Java is no longer installed with a OS X 10.11 El Capitan clean install, and you’ll find that after updating a Mac a prior version of JRE may no longer function.

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'. On Mac OSX, the default version we are using to run the IDE (not to compile your code) is Java 6. This is primarily because the font rendering on Java 6 has full subpixel LCD antialiasing, whereas Java 7 and 8 does not.

You may come across when trying to use some particular applications or web content, “This application requires the legacy Java SE 6 runtime which is unavailable for this version of OS X.” error message, which means if you want to run that app you’re going to need to use an older version of Java.

If you do not need Java, you should not install Java. Java is, and always has been, the source of many security holes.

Here’s how you can install JRE (Java Runtime Environment).

Step 1. Open Safari and go to the Oracle Java downloads page and download the JRE .tar.gz version. You should end up with a file named something similar to jre-8u65-macosx-x64.tar.gz.

Step 2. Go to your Downloads folder and extract the JRE download or use Terminal to extract files:

Step 3. Open Terminal

Step 4. Edit the Info.plist file within to enable the JRE to be used from the the command line, and from bundled applications:

Step 5. Move the JRE folder to the correct location:

Type password on prompt.

Be sure you are in the correct directory (the JRE folder) when you issue this command, because it will move your current directory to /Library/Java/JavaVirtualMachines/!

Step 6. Create a link to add backwards compatibility for some applications made for older Java versions:

You should be done now, so try and open the application. If it does not work, some applications require legacy Java 6 to be installed.

You can have it installed without actually using it, however, it’s possible to trick the applications into thinking legacy Java 6 is installed, without actually doing so.

Step 1.Disable SIP (System Integrity Protection) in OS X El Capitan. Here is tutorial to disable and enable SIP.

Step 2. Trick some applications into thinking that legacy Java 6 is installed by creating two folders with the following commands in Terminal:

Step 3. Don’t forget to enable SIP again after creating these directories.

This article shows you how to install Java on Mac OSX, and also how to do Java/JDK version switching.

Tested with

Mac OS 10.15.3
JDK 8, 9, 10, 11, 12, 13 (AdoptOpenJDK)

Note
On Mac OSX, Java should installed in this folder; it is Mac’s standard.

We will show you two ways to install Java JDK on Mac, via the popular Homebrew package manager and manually installation.

1. Homebrew

1.1 Install Homebrew and update it.

1.2 Add adoptopenjdk/openjdk.

1.3 Find all available JDK.

The output may vary.

1.4 Java 8, 9, 10, 11, 12, 13, choose one to install.

This example will install Java 8 and 11 for testing.

1.5 Where Java is installed? /usr/libexec/java_home -V

Homebrew will install the JDK at folder /Library/Java/JavaVirtualMachines/, and this folder is Mac’s standard folder for Java installs.

1.6 Test it, by default, Mac takes the highest version.

1.7 How to do version switching? Virtualbox mac free download. Refer to below 3. version switching

2. Manual installation

The example shows you how to download the early access JDK 14 and install it on Mac OSX.

Steps

Download JDK.
Puts the JDK folder at /Library/Java/JavaVirtualMachines.
Export JAVA_HOME.

2.1 Download the early access JDK 14 from the OpenJDK website.

2.2 Extracts tar file to /Library/Java/JavaVirtualMachines

2.3 Export JAVA_HOME.

Find out where is JDK 14.

Java 8 Download Mac Yosemite Installer

Create or edit the existing ~/.bash_profile with a text editor.

Export JAVA_HOME, save and exit.

~/.bash_profile

Reflect the changes

2.4 Test it.

3. Version Switching

In this tutorial, we installed the Java 8 and Java 11 via Homebrew (Step 1), and Java 14 manually (Step 2), so this Mac has three versions now. And the Mac is using the JDK 14.

Note
There are tools like jEnv to manage the Java version switching, but I prefer to manage with export JAVA_HOME manually, it’s simple and easy to understand, no black box magic.

3.1 Create or edit the existing ~/.bash_profile with a text editor like vim or nano, export JAVA_HOME to the specified JDK we want to use on Mac.

The above changes will make JAVA_HOME point to JAVA 8.

3.2 Reflect the changes.

Done.

If we want to switch JDK version again, update the ~/.bash_profile and export JAVA_HOME to other JDK version.

Java 8 Download Mac Yosemite Dmg

References

Tags : beginnerinstall jdkinstall-javamac

Java 8 Download For Mac Os X Yosemite

Java 8 Download Mac Yosemite 10.10

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