B4J Tutorial Run B4J java and javafx UI Applications on Linux ARM32 & ARM64 Computers

To run a B4J console or GUI Application on any 32-bit or 64-bit ARM computer, follow these steps:

Have tested it on Raspberry Pi 4 and Orange Pi Zero 3, 2W running Ubuntu 21.04 and 22.04 respectively:

[edit - Also works with 32-bit Raspberry Pi OS on RPI 3 - see @dave4cbu post below]

[edit - 21-09-2024: This will not work (for obvious reasons) with Libraries such as "ControlsFX" that require Java 8

STEP 1: Install openjfx11+

sudo apt-get update
sudo apt-get install openjfx

STEP 2: Find out where openJfx is installed

dpkg-query -L openjfx

NOTE: ..... should be installed in /usr/share/openjfx

STEP 3: Install OpenJDK11+ JRE (or whatever version the default JRE is) and check version

sudo apt install default-jre

sudo java -version

STEP 4: Run Program

sudo java -jar --module-path /usr/share/openjfx/lib --add-modules javafx.controls yourB4Jprogram.jar

NOTE: You can run B4J jar files compiled with Oracle Java 8 as well as OpenJDK11+


Instead of typing the long command line, you can create a shell script with the above command line and pass your jar file as a parameter:

1. Create a file called "jrun" with the following two lines:

#!/bin/bash
sudo java -jar --module-path /usr/share/openjfx/lib --add-modules javafx.controls $1

2. Make the file executable:

chmod +x jrun

3. Run the program with a simplified command line:

./jrun yourB4Jprogram.jar


Enjoy!



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[dave4cbu]

To run a B4J console or GUI Application on any 64-bit ARM computer, follow these steps:

Have tested it on Raspberry Pi 4 and Orange Pi Zero 3, running Ubuntu 21.04 and 22.04 respectively:

STEP 1: Install openjfx11

sudo apt-get update
sudo apt-get install openjfx

STEP 2: Find out where openJfx is installed

dpkg-query -L openjfx

NOTE: ..... should be installed in /usr/share/openjfx

STEP 3: Install OpenJDK11 and check version

sudo apt install default-jre

sudo java -version

STEP 4: Run Program

sudo java -jar --module-path /usr/share/openjfx/lib --add-modules javafx.controls yourB4Jprogram.jar

NOTE: You can run B4J jar files compiled with Oracle Java 8 as well as OpenJDK11


Instead of typing the long command line, you can create a shell script with the above command line and pass your jar file as a parameter:

1. Create a file called "jrun" with the following two lines:

#!/bin/bash
sudo java -jar --module-path /usr/share/openjfx/lib --add-modules javafx.controls $1

2. Make the file executable:

chmod +x jrun

3. Run the program with a simplified command line:

./jrun yourB4Jprogram.jar


Enjoy!



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This is brilliant thanks. Just got my B4J app running on a Raspberry pi3.
Works perfectly.

 

[aminoacid]

This is brilliant thanks. Just got my B4J app running on a Raspberry pi3.
Works perfectly.

That's good to know. Just curious to know whether you installed it on Ubuntu or Raspberry Pi OS. Which Version and whether the OS was 32bit or 64bit?

 

[dave4cbu]

That's good to know. Just curious to know whether you installed it on Ubuntu or Raspberry Pi OS. Which Version and whether the OS was 32bit or 64bit?

Raspberry pi OS 32bit version.
Just noticed that the touch screen isn't working with my app so I need to figure out what's going on there but works well with keyboard & mouse so cheers for that.