![]() ![]() This, output on my machine, tells me that I am using JDK version 1.8.0_101. Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home In that case, I recommend that users check their $JAVA_HOME bash environmental variable from within Terminal to make a JDK determination, as follows: $ echo $JAVA_HOME The only potential issue here would be if you had multiple JDK versions installed. Armed with this information, we can simply open Terminal and list the contents of this directory on our machine to find the JDK version, as follows: ls /Library/Java/JavaVirtualMachines Here, it’s important to know that on recent versions of Java, the JDK is located at absolute path /Library/Java/JavaVirtualMachines/. Similar to #2 under the “Checking Java version on macOS” section above, this is a command line procedure, which in my example will use Mac Terminal. OpenJDK Runtime Environment Zulu11.2+3 (build 11.0.1+13-LTS) On my machine, the sanitized version of this procedure looks like: $ java -version The Java executable on your local machine will output the appropriate Java versioning information. Simply open a shell interpreter (command line interface) such as the Terminal application, and type java -version This is the method preferred by most users who are more familiar with personal computing and the command line interface. The version that is presented in the Java Control Panel is the currently running (=usually recommended) version of Java on your Mac machine. b) click on the “Update” tab in the control panel to display Java version information.a) click on the “General” tab, followed by the “About” button, to display Java version information,.The Java preferences open in a separate window, called “Java Control Panel.” In Java Control Panel, do either Simply open System Preferences (“Apple > System Preferences”), and then click “Java” (you will see the Java icon). This one is the easiest option for most users that like using the traditional, visual approach to computing on macOS. There are two ways that I recommend checking your Java version, and there is one procedure that I like to use to check which JDK is currently in use on my MacBook Pro. In recent versions of Java for macOS, the default install location for some files has changed and the places to look to determine your Java version, or Java JDK (“Java Development Kit” technically, now Java SE Development Kit, which stands for “Java Platform, Standard Edition Development Kit” downloads here) version, have also changed accordingly. In these situations, and others, it is very important to be able to quickly find out your Java and JDK versions on Mac. dmg files) that install the software program in different ways depending on the operating system (macOS) and Java versions on your machine. When you are about to download new software on Mac, developers may have generated multiple app containers (. First, move aside the Java 6 for 64-bit Intel that’s already installed, but non-functional.Java is a class-based, object-oriented programming language that is fast and powerful and runs many important computing programs and platforms. How to Check Java in Mac OS Open the launchpad Type terminal in the search bar Open the terminal by clicking on the icon in the search results A new window. ![]() Leopard on PowerPC or 32-bit IntelĪs the developer preview installer won’t work properly on Leopard, instead we’ll extract the JVM and install it by hand. The change takes effect immediately, and can be confirmed on the command line with java -version. Since Java 1.5 is still the default on Leopard, open “Java Preferences” in /Applications/Utilities and reorder the list of JVMs so that “Java SE 6” is first in the list. Leopard on 64-bit IntelĪs long as your CPU is a Core 2 Duo or later, all that’s required is a quick preference change. With some hackery, it can still be installed on Tiger or 32-bit Leopard. You may not recall that several developer previews were released, and the last to retain Tiger compatibility was Java SE 6 R1 DP6 (download), which supplied a PowerPC and 32-bit Intel JVM. If you were using Macs back then, you may recall that Apple’s Java 6 was only officially released for Leopard on 64-bit Intel, and didn’t become the default JVM until Snow Leopard (at which point a 32-bit Intel version was also made available). 1.6) on Mac OS X Tiger and Leopard, both Intel and PowerPC. For another project, I found myself needing to install Java 6 (a.k.a. ![]()
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