B4J Tutorials

MichalK73 · Aug 24, 2021

Hello.
Namecheap.com is probably known to many as a domain provider. You can buy an interesting domain for our project for pennies. Some time ago I put my own small OpenMediaValue server on...

Erel · Aug 22, 2021

Add to B4XMainPage:

B4X:

Type PagePosition (Left As Int, Top As Int, Width As Int, Height As Int, IsIconified As Boolean)
Private kvs As KeyValueStore

And:

B4X:

Public Sub SavePagePosition (Page...

Erel · Aug 19, 2021

Upgrading from a non-tls connection to a tls connection only makes sense when dealing with a protocol that specifically requires it. It is much simpler and also a bit more secure to start with a...

Erel · Jul 28, 2021

I found this benchmark that tests the same algorithm in multiple programming languages and decided to test it in B4J.

I've implemented the two algorithms.

B4X:

Sub Process_Globals

End Sub...

Erel · Nov 30, 2015

This example shows how simple it is to create network solutions with B4J, B4A and B4i.

In this case the network communication is based on UDP.

It implements a remote desktop mouse, where the...

Mashiane · Jun 26, 2021

Ola

I use a lot of parseInt and parseFloat when I code because even when I define the variables as Int, Double, Float etc, somewhere somehow mistakes happen, you find your app not working and...

walt61 · Jul 22, 2021

I was making the switch from Java 8 to Java 11 and wanted to use the 'Integrated B4JPackager11' as explained by @Erel in...

jmon · Jul 20, 2021

Hi,

I had to make my application (PostChat) available on MacOs. I had no problems porting the app to Linux, but I found the port to MacOs very annoying, and had lots of issues. So I'm posting...

alwaysbusy · Mar 23, 2020

WYSIWYG Web Builder (https://www.wysiwygwebbuilder.com/) is a cheap Website builder that makes it very easy to make your design. @Alejandro Moyano mentioned it in his post on his...

MarcoRome · Jul 5, 2021

For Mac
as already suggested by the good @KMatle

I needed to remove the Packager property (The B4J-packager does it on it's own with the new version)

Note 1*

B4X:

'#PackagerProperty...

Heuristx · Jun 30, 2021

In B4XPages we rely heavily on tags to identify UI elements. Yet tags are valuable for connecting data to the UI, too, and it is easy to feel we are wasting tags for identification.
There is a...

Mashiane · Jun 29, 2021

Ola

I just spent some time nearly sweating as to why my app was not working properly. Turns out that my element names are not unique and as such a conflict arose.

Background...

Mashiane · Jun 17, 2021

Ola

As you are aware, the BANanoJsPDFAD tool is out. Its developed using jsPDF and it uses the abstract designer for you to create pdf Documents.

You can insert text, triangles, images...

Erel · Jun 21, 2021

This example visualizes the data from: https://ourworldindata.org/coronavirus-source-data
As the CSV data is quite large, a...

Erel · Jun 21, 2021

XLUtils v2.02 adds support for urls, bookmarks and page breaks.

A paragraph tag with the PageBreak attribute will start on a new page.

B4X:

$"[p PageBreak=True]This will appear...

Star-Dust · Jun 14, 2021

Many years ago I needed to sniff a connection and I didn't have a free sniffer available and I didn't know how to create one .... So after a long reflection I decided to create a Proxy Server in...

KMatle · Jun 13, 2021

Just a short note how my experience was migrating to JPOI5. Not worth a tutorial - more a "all easy note" when you migrate an important app (like mine which is used by a company).

I needed to...

Johan Schoeman · Apr 18, 2021

This is an "inline java code" example for the javafx line chart. It has very basic functionality at present.

You will need javafx.controls.jar. I found the jar on my computer at...

Erel · May 4, 2021

XLUtils v1.03 adds support for grouping rows and columns and for adding links.

Grouping is done with XLSheetWriter.GroupRows / Columns.
By default the expand button is positioned at...

tchart · May 10, 2021

Should I use SQLite as my web server database?

This has come up before and last week it came up again in the "Chit Chat" forum. The question has already been answered here before and there...

B4J Tutorials

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Setting a dynamic address IP in namecheap. Program + source

[B4XPages] Save the pages size and position

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STARTTLS - upgrading a non-tls socket to a tls socket.

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B4J Primes Benchmark

[example] [B4X] Control the desktop with your phone

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[BANano] why you might need parseBool

[Tool] Integrated B4JPackager11 helper: PrepInstallerScript (with source code)

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How to run .jar files on MacOs + VM to test (and other MacOs things)

[BANano] Using an external Editor like WYSIWYG Web Builder with B4J/BANano

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[jPOI] Migration to version 5 Mac

Tag management for UI Nodes

[BANano] Why it is important to use unique names for your elements when not using AutoID?

[BANano] Creating PDF Documents with jsPDF using BANanoJsPDFAD

[XLUtils] Word document with 200 charts

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[XLUtils] Word - bookmarks, urls and page breaks

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[B4X] Proxy Server Socks 4 and Proxy Http (Source Code)

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[jPOI] Migration to version 5 experience (not a big thing)

javafx charts / graphs - LineChart, PieChart, BarChart, AreaChart, Horizontal BarChart, Stacked BarChart, Stacked AreaChart

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[XLUtils] Hyperlinks and Outlining / Grouping

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jServer & SQLite [Multiple Request Stress Test]

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B4J Tutorials

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