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- #INSTRUCTIONS TO ENVIRONMENT VARIABLES JAVA JDK ON MAC INSTALL#
- #INSTRUCTIONS TO ENVIRONMENT VARIABLES JAVA JDK ON MAC UPDATE#
I stopped and then restarted tomcat and it ran in the new JDK. Sudo ln -fhsv 1.6 CurrentJDK (from the Versions/ folder)
#INSTRUCTIONS TO ENVIRONMENT VARIABLES JAVA JDK ON MAC UPDATE#
So I had to update the CurrentJDK/ symbolic link to point to the 1.6 JDK. In my case, after installing Java 1.6, CurrentJDK/ still pointed to 1.5/ (which is itself a link to 1.5.0). In the Versions/ folder and you’ll see where the symbolic links are pointing. Whichever JDK the above link points to, is the JDK that /usr/libexec/java_home will ultimately refer to, and therefore any app (such as tomcat’s startup.sh script) that requests the java_home path will ultimately use. System/Library/Frameworks/amework/Versions/CurrentJDK The symbolic link that matters most, however, is this: The above path will show you all the installed versions of java on your machine as well as several symbolic links to the installed versions.
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What if you want that to point to a different version of the JDK? Well, it turns out that /usr/libexec/java_home gets the path from another path (/System/Library/Frameworks/amework/Versions/CurrentJDK) which is a symbolic link to one of the installed versions of the JDK on the computer.Ĭd /System/Library/Frameworks/amework/Versions You’ll get a path to a particular version of java, which is the default version of the JDK for the command line and shell scripts.
#INSTRUCTIONS TO ENVIRONMENT VARIABLES JAVA JDK ON MAC INSTALL#
rpm file, in a command prompt window type rpm ivh jdk install rpm file. dmg file and double-click the installer package. Apple does things in an unusual – but you might say very elegant – way, if only it was more clearly communicated. On Windows, double-click the installer executable and follow the steps to install the JDK and the included JRE to your local machine. You’ll get a one page description about how the Mac configures the JAVA_HOME environment variable, which is needed by many java applications. After tracking it down, here is what I discovered.
![instructions to environment variables java jdk on mac instructions to environment variables java jdk on mac](https://stackhowto.com/wp-content/uploads/2021/05/how-to-set-the-java-path-environment-variable-in-windows-10-4.png)
The Applications->Utilities->Java Preferences app allows you to set which JDK you prefer apps to use, but unfortunately this isn’t sufficient as some apps like Tomcat get the JDK via another avenue (/usr/libexec/java). How was it doing that, I wondered? A little investigation revealed the answer, as well as info about how the Mac is configured for Java. Testing the VisualVM behavior, I launched Tomcat 6 in Eclipse, but quickly found that Tomcat was still referencing Java 1.5. Its a nice improvement over prior vm monitoring features in Java 4 & 5. I recently installed Java 6 on my Mac laptop, which includes VisualVM.