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I’m testing how viable a Mac will work as my daily computer for work. The only thing I’m hung up on is the company I work for uses Oracle for a few functions. These web pages use Java to run and Safari does not allow Java to run even after in installed Java on my machine. I’m sure there is a way to accomplish this goal and was hoping the good people of Reddit will help.
Hey guys do any one know about where the control panel java can be found in mac os Ventura. it is available in the older settings app (At that time it is called System preference). you can found a java icon in the older settings app. Now after update i can not find anywhere.
Turns out java has been moved into brew core recently, so the correct command as of August 2022 is:
brew install java
Then check your installation by running
java -version
If the result does not looks like this:
openjdk 18.0.2 2022-07-19
OpenJDK Runtime Environment Homebrew (build 18.0.2+0)
OpenJDK 64-Bit Server VM Homebrew (build 18.0.2+0, mixed mode, sharing)
but like this:
The operation couldn’t be completed. Unable to locate a Java Runtime.
Please visit http://www.java.com for information on installing Java.
Then you also need to create a symlink for the system Java wrappers to find this JDK:
sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk \
/Library/Java/JavaVirtualMachines/openjdk.jdk
As an add-on to the accepted answer: to install a certain version of Java, e.g. version 11, run:
brew install openjdk@11
And symlink it:
sudo ln -sfn /opt/homebrew/opt/openjdk@11/libexec/openjdk.jdk \
/Library/Java/JavaVirtualMachines/openjdk-11.jdk
I install java x64 DMG installer for Mac. I installed the on my Mac and when I go check it in terminal it tells me that no such file or directory is found my Mac? I want to use Java to create Minecraft mods.
First run /usr/libexec/java_home -V which will output something like the following:
CopyMatching Java Virtual Machines (3):
1.8.0_05, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home
1.6.0_65-b14-462, x86_64: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_65-b14-462, i386: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home
Pick the version you want to be the default (1.6.0_65-b14-462 for arguments sake) then:
Copyexport JAVA_HOME=`/usr/libexec/java_home -v 1.6.0_65-b14-462`
or you can specify just the major version, like:
Copyexport JAVA_HOME=`/usr/libexec/java_home -v 1.8`
Now when you run java -version you will see:
Copyjava version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)
Add the export JAVA_HOME… line to your shell’s init file.
For Bash (as stated by antonyh):
Copyexport JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
For Fish (as stated by ormurin)
Copyset -x JAVA_HOME (/usr/libexec/java_home -d64 -v1.8)
Updating the .zshrc file should work:
Copynano ~/.zshrc
export JAVA_HOME=$(/usr/libexec/java_home -v 1.8.0)
Press CTRL+X to exit the editor Press Y to save your changes
Copysource ~/.zshrc
echo $JAVA_HOME
java -version
This answer is an attempt to address: how to control java version system-wide (not just in currently running shell) when several versions of JDK are installed for development purposes on macOS El Capitan or newer (Sierra, High Sierra, Mojave). As far as I can tell, none of the current answers do that (*).
As a developer, I use several JDKs, and I want to switch from one to the other easily. Usually I have the latest stable one for general use, and others for tests. But I don't want the system (e.g. when I start my IDE) to use the latest "early access" version I have for now. I want to control system's default, and that should be latest stable.
The following approach works with Java 7 to 12 at least (early access at the time of this writing), with Oracle JDK or OpenJDK (including builds by AdoptOpenJDK produced after mid-October 2018).
Solution without 3rd party tools:
- leave all JDKs at their default location, under
/Library/Java/JavaVirtualMachines. The system will pick the highest version by default. - To exclude a JDK from being picked by default, rename its
Contents/Info.plisttoInfo.plist.disabled. That JDK can still be used when$JAVA_HOMEpoints to it, or explicitly referenced in a script or configuration. It will simply be ignored by system'sjavacommand.
System launcher will use the JDK with highest version among those that have an Info.plist file.
When working in a shell with alternate JDK, pick your method among existing answers (jenv, or custom aliases/scripts around /usr/libexec/java_home, etc).
Details of investigation in this gist.
(*) Current answers are either obsolete (no longer valid for macOS El Capitan or Sierra), or only address a single JDK, or do not address the system-wide aspect. Many explain how to change $JAVA_HOME, but this only affects the current shell and what is launched from there. It won't affect an application started from OS launcher (unless you change the right file and logout/login, which is tedious). Same for jenv, it's cool and all, but as far as I can tell it merely changes environment variables, so it has the same limitation.