Installing OpenJDK on MacOS: A Step-by-Step Guide

When trying to install OpenJDK on a Mac, you may encounter an alert message warning that the app cannot be verified. However, this does not mean that the installation is faulty or infected with malware.

To begin with, download the OpenJDK 64-Bit Server VM (build 13.0.1+9, mixed mode, sharing) from the official website. Once downloaded, extract it to a directory of your choice.

Verifying the JDK Installation

After extracting the file, open Terminal and run the `java -version` command. This will confirm that OpenJDK is installed correctly on your system.

Next, you'll need to apply some environment variable changes to make sure Java is recognized by your system. To do this, edit your bash profile using the following command:

```bash

$ nano ~/.bash_profile

```

Add the following lines at the end of the file and save it:

```bash

JAVA_HOME='/Library/Java/JavaVirtualMachines/jdk-13.0.1.jdk/Contents/Home'

export PATH=$PATH:$JAVA_HOME/bin

```

Then, relaunch Terminal to apply these changes.

Setting Environment Variables

Alternatively, you can manually set the environment variables using the following commands:

```bash

$ sudo mv jdk-13.0.1.jdk /Library/Java/JavaVirtualMachines/

$ export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-13.0.1.jdk/Contents/Home

$ export PATH=$PATH:$JAVA_HOME/bin

```

Installing Maven on Mac OS

Once you have successfully installed OpenJDK, you can install Maven using a package manager like HomeBrew or through XCode Command Line Tools.

For this tutorial, we will focus on installing Maven without relying on any other software. Maven is the most widely used build and project dependency management tool for Java-based applications, and it's free to use.

In this article, we covered the process of installing OpenJDK on a Mac OS system. We also provided step-by-step instructions on verifying the JDK installation and setting environment variables. Additionally, we touched on installing Maven without relying on any other software. With these steps, you should be able to get started with Java development on your Mac OS machine.

Macos install openjdk