Mac os jdk location

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

Any Intel-based computer running macOS.

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 16 Interim 0, Update 0, and Patch 0, then you see a string that includes the text 16 . 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 16 —exec javac -version

Installing the JDK on macOS

Download the JDK .dmg file, jdk- 16 . interim.update.patch _osx-x64_bin.dmg from Java SE Downloads page.

Click Accept License Agreement .

Uninstalling the JDK on macOS

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.

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

For example, to uninstall 16 Interim 0 Update 0 Patch 0:

$ rm -rf jdk- 16 .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?

3. After installing Java for macOS 2012-006, can I continue to use Apple’s Java 6 alongside the macOS JDK for Java 16 ?

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 16`

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. 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.

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Mac os jdk location

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

Any Intel-based computer running macOS.

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 15 Interim 0, Update 0, and Patch 0, then you see a string that includes the text 15 . 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 15 —exec javac -version

Installing the JDK on macOS

Download the JDK .dmg file, jdk- 15 . interim.update.patch _osx-x64_bin.dmg from Java SE Downloads page.

Click Accept License Agreement .

Uninstalling the JDK on macOS

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

For example, to uninstall 15 Interim 0 Update 0 Patch 0:

$ rm -rf jdk- 15 .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?

2. How do I uninstall Java?

3. After installing Java for macOS 2012-006, can I continue to use Apple’s Java 6 alongside the macOS JDK for Java 15 ?

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 14`

4. 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.

Источник

Mac os jdk location

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

Any Intel-based computer running macOS.

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

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.

Uninstalling the JDK on macOS

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

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?

2. How do I uninstall Java?

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`

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

Go back to Apple Java using the following instructions:

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

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

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.

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What is path of JDK on Mac ? [duplicate]

Im using Mac only at work and I need to set JAVA_HOME to proper path of JDK. I downloaded JDK, installed it and now I can’t find it anywhere. I was looking at the internet for the solution, but there is no folder Libraries/Java.

5 Answers 5

The location has changed from Java 6 (provided by Apple) to Java 7 and onwards (provided by Oracle). The best generic way to find this out is to run

This is the natively supported way to find out both the path to the default Java installation as well as all alternative ones present.

If you check out its help text ( java_home -h ), you’ll see that you can use this command to reliably start a Java program on OS X ( java_home —exec . ), with the ability to explicitly specify the desired Java version and architecture, or even request the user to install it if missing.

A more pedestrian approach, but one which will help you trace specifically which Java installation the command java resolves into, goes like this:

if that gives you something like /usr/bin/java , which is a symbolic link to the real location, run

On my system, this outputs

and therefrom you can read the Java home directory;

if usr/bin/java points to another symbolic link, recursively apply the same approach with

An important variation is the setup you get if you start by installing Apple’s Java and later install Oracle’s. In that case Step 2 above will give you

and that particular java binary is a stub which will resolve the actual java command to call by consulting the JAVA_HOME environment variable and, if it’s not set or doesn’t point to a Java home directory, will fall back to calling java_home . It is important to have this in mind when debugging your setup.

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Mac os jdk location

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

Any Intel-based computer running macOS.

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 13 Interim 0, Update 0, and Patch 0, then you see a string that includes the text 13 . 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 13 —exec javac -version

Installing the JDK on macOS

Download the JDK .dmg file, jdk- 13 . interim.update.patch _osx-x64_bin.dmg .

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

Uninstalling the JDK on macOS

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

For example, to uninstall 13 Interim 0 Update 0 Patch 0:

$ rm -rf jdk- 13 .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?

2. How do I uninstall Java?

3. After installing Java for macOS 2012-006, can I continue to use Apple’s Java 6 alongside the macOS JDK for Java 13 ?

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 13`

4. 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.

Источник