B4J Tutorials

Deutsche Post Internetmarke - get Stamps per Api

• By DonManfred
• Mar 8, 2025

This Thread is about the german Post and their free Api Service for Postalstamps and other Services...

 

Last edited: Mar 8, 2025

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[Web][SithasoDaisy5] Designing Web Forms with SDUIPreferences - Part 1

• By Mashiane
• Mar 7, 2025

Hi Fam

SithasoDaisy5 Demo incl Preferences Dialog Forms Builder

SithasoDaisy5 Open Source

Before you start this tutorial, please ensure that your dev environment is setup by...

 

Last edited: Apr 27, 2025

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Integrated B4JPackager11 - The simple way to distribute standalone UI apps

• By Erel
• May 17, 2020

B4JPackager11 is a utility written in B4J that uses the underlying Java tools to create a standalone package that doesn't depend on any other software being installed.
It works with OpenJDK 11 and...

 

Attachments

• jssc.zip

  69.6 KB · Views: 707

Last edited: Feb 26, 2026

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Cache for WebApp was keeping previous version of .js file - How to fix

• By hatzisn
• Mar 4, 2025

This was the first time I faced something like this and it was Chrome's fault. Here is what happened:

I added in a .js file a new javascript function. When I tried to call it, Chrome was saying...

 

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[Web][SithasoDaisy5] Designing Forms with the Abstract Designer

• By Mashiane
• Mar 4, 2025

Hi Fam

SithasoDaisy5 Demo

Before you start this tutorial, please ensure that your dev environment is setup by following this tutorial...

 

Last edited: Apr 27, 2025

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FXThemes

• By stevel05
• Feb 27, 2025

Now I have a windows 11 PC and thanks to a prod from one of @Cableguy posts on another thread, I finally got round to looking at an alternative to my Replacement Titlebar lib.

This...

 

Last edited: Feb 27, 2025

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jBluetooth under Linux: also works

• By peacemaker
• Feb 24, 2025

But if to make lots of preparations:
0. Do not forget to include into the B4J library folder file: www.b4x.com/b4j/files/bluecove-2.1.1-SNAPSHOT.jar

1. Install Linux Bluetooth Bluecove...

 

Last edited: Feb 26, 2025

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B4J-Bridge dockerimage

• By Blueforcer
• Dec 18, 2018

A friend of mine created a docker image for me to debug apps on my server quickly and easily.
I am happy to share this with you.

https://hub.docker.com/r/o0shojo0o/b4jbridge

 

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[PyBridge] Linear regression with scikit learn

• By Erel
• Feb 17, 2025

This example is based on: https://scikit-learn.org/stable/auto_examples/linear_model/plot_ols.html
The steps are:

1. Read the CSV file with StringUtils.
2. Take the BMI and target columns...

 

Attachments

• Project.zip

  27 KB · Views: 364

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[PyBridge] Tips to make life easier

• By Daestrum
• Feb 17, 2025

1, Download VSCode to edit the Python source files (you get hints etc)
2, Put the Python source code in files directory. (set external tool to VSCode for easy editing)
3, Run the code from...

 

Last edited: Feb 17, 2025

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MathArt

• By Johan Schoeman
• Feb 2, 2025

Sure you will figure it out. Four rotating/pivoting arms of different length and rotating at different speeds (some CW and some CCW) to make all kinds of interesting drawings. Change the speed /...

 

Attachments

• b4jMathArt.zip

  2.9 KB · Views: 383

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HTMX+Bootstrap5+MiniHTML+WebApiUtils+Server

• By aeric
• Jan 25, 2025

This example uses B4X,

• specifically MiniHTML library
• cross over HTMX to generate interactive HTML
• based on Modal Dialogs in Bootstrap example on HTMX website
• to...

 

Attachments

• WebApiUtils.b4xlib

  8.9 KB · Views: 374
• MiniHtml.b4xlib

  19.8 KB · Views: 376
• htmx-b4x.zip

  3.2 KB · Views: 384

Last edited: Jan 27, 2025

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Tip : B4XLib documentation

• By walt61
• Jan 26, 2025

I recently spent half a day on a wild goose chase trying to find out what was going on with SQLCipher, while the issue turned out to be B4XTable.b4xlib containing an #AdditionalJar for...

 

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Trace of a point on a rolling wheel

• By Johan Schoeman
• Jan 19, 2025

 

Attachments

• b4jRotatingWheel.zip

  2.2 KB · Views: 333

Last edited: Jan 25, 2025

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Run B4J java and javafx UI Applications on Linux ARM32, ARM64 & Intel/AMD Computers and VPSs

• By aminoacid
• Mar 15, 2024

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...

 

Last edited: Jan 10, 2025

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Using MiniORMUtils in Web API Server v3

• By aeric
• Nov 2, 2024

Introduction
At the time of writing, MiniORMUtils is version 1.14 and Web API Server v3 is version 3.00.
MiniORMUtils support SQLite and MySQL databases.
We don't need to write...

 

Last edited: Jan 8, 2025

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Google Image Downloader (using Pnd_Selenium Library)

• By Magma
• Dec 30, 2024

Hi there,

I am sharing my example Google Image Downloader using Selenium and to be more specific Pnd_Selenium lib (from Pendrush) that you can find here...

 

Attachments

• Google Image Downloader.zip

  18.4 KB · Views: 347

Last edited: Dec 30, 2024

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[WebApps] Using Laragon as your development web server

• By Mashiane
• Jul 22, 2019

Ola

I just ran into this link, https://www.keycdn.com/blog/web-development-tools

And besides XAMPP, which I have been using for my personal web development projects, there is Laragon...

 

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[Web] Plug n Play MySQL Database Authentication via PHP REST API in 5 minutes or less

• By Mashiane
• Nov 17, 2024

Hi Fam

Download

You will recall that we did a tutorial on MySQL back-ends using a plug n play CRUD REST API (Related Topics below)

This is based on this GitHub Project

In this...

 

Last edited: Nov 17, 2024

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[BANano] Using PocketBase (Firebase Alternative) for your Apps.

• By Mashiane
• Oct 18, 2022

Hi there.

Update: This class is based on the JavaScript SDK available here, https://github.com/pocketbase/js-sdk
REST API calls are dont internal to the library, if you want to use pure...

 

Last edited: Sep 19, 2023

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