How do I know if Java is installed on m1 Mac?

Answered by Phillip Nicastro

To check if Java is installed on your M1 Mac, you can follow these steps:

1. Open Terminal: You can open Terminal by navigating to Applications > Utilities > Terminal or by using the Spotlight search by pressing Command + Space and typing “Terminal”.

2. Check the system default Java version: In the Terminal, type the following command and press Enter:
“`
Java –version
“`
This command will display the version of Java that is set as the system default. If you see an output similar to `java version “x.x.x”`, where “x.x.x” represents the version number, it means that Java is already installed on your system.

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Note: If you do not have Java installed, you will see an error message stating that the command “java” was not found.

3. Verify the Java version in the JDK: If you have recently installed Java on your M1 Mac, it is possible that the system default Java version may not have been updated yet. To verify the Java version you just installed, follow these steps:

A. Open a new Terminal window if you haven’t already.

B. Change the directory to the Java installation location by running the following command and pressing Enter:
“`
Cd /Library/Java/JavaVirtualMachines
“`

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C. List the contents of the directory by running the command:
“`
Ls
“`

D. You should see the name of the Java version you just installed. It may look like `jdk-16.0.1.jdk` or similar. Change the directory to the specific version by running the following command, replacing `` with the actual version name:
“`
Cd /Contents/Home
“`

E. check the Java version by running the command:
“`
Bin/java –version
“`
This command should display the version of Java contained within the JDK you just installed. If you see the expected version number, it means that Java is correctly installed.

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It’s worth mentioning that the M1 Macs use the ARM architecture, so you would need a version of Java that is specifically built for ARM. The steps above assume that you have already installed an ARM-compatible version of Java.

In case you don’t have Java installed on your M1 Mac, you can download and install it from the official Oracle website or use a package manager like Homebrew to install it.