You may want a secondary development machine or you may only have a Raspberry pi for development, either way I want to say that it is very much possible to use Raspberry pi for java and spring boot development. This is a followup to my previous post https://thepro.io/post/minimal-setup-for-a-modest-daily-driver-raspberry-pi-based-development-pc–YO .
These overclock settings are for raspberry pi 4, but you can also overclock for other pi versions, there are plenty of other helpful tutorial blogs for this.
The default cpu frequency for Rpi 4 is set to 700 MHz, increasing to the maximum will make development much more faster than default.
Open config.txt file to edit
sudo nano /boot/config.txt
uncomment the following parameters or add them if not found and restart the machine.
over_voltage=6 arm_freq=2147 gpu_freq=750
Refer to https://magpi.raspberrypi.org/articles/how-to-overclock-raspberry-pi-4 for more detailed instructions on overclocking.
To install OpenJDK run the following command in the terminal,
sudo apt update sudo apt install default-jdk
To check the version installed
To install maven run the following command in the terminal,
sudo apt update sudo apt install maven
and to check installed maven version
Installing Visual Studio Code
You would think but why not eclipse right ?. Well, at the time of writing this post, raspberry pi OS did not have a way of installing latest version of eclipse. The eclipse available from the repository is nearly a decade old and will not work with the latest java version.
Now to install vscode, go to https://code.visualstudio.com/download and download either Arm or Arm 64 debian package, depending on the version of raspberry pi OS you have setup.
To check, run following command in the terminal. If the response contains ‘armv7l’, choose ‘Arm’ and if it contains ‘aarch64’, choose ‘Arm 64’ for 64 bit version of package.
once the .deb file is downloaded, Install the package using following command
cd /Downloads sudo dpkg -i code_*.deb
Java Support for Visual studio code
Click on extensions tab on the sidebar menu and search for “java extensions” and click install. This will install all the required extension packages required to run and test java applications along with support for code completion and code navigation.
Spring boot development on Visual studio code
Now that we have the IDE ready, let’s create a simple spring boot application.
Go to spring initializr at start.spring.io and put together a demo project and download.
Extract the downloaded project and open with visual studio code.
Since the java extension pack is installed, you should see a Java Overview screen with an alert saying “java project detected would you like to import”. Click yes and proceed with import,
next, click on the debug tab on the sidebar menu and click on “create a launch.json file” and choose java from the options displayed.
This should create the launch file. Click on “Launch DemoApplication” option from the debug dropdown on the debug tab.
Spring boot should now be started on default port 8080. Open browser and navigate to http://localhost:8080 to check if server is running.
This setup is more than enough for spring development, but you can add more spring boot support by installing Spring boot extension Pack.
Go to Extensions tab on the side menu and search for “Spring boot extensions” and click install
That’s it. Happy Coding !