B4J Tutorials

To help with my own learning I have played with JavaObject and JavaFX to create linecharts.

Here are the 3 examples I have made I have ported the code directly from the Oracle...

 

The attached project is a port of Basic4android charts framework: http://www.b4x.com/android/forum/threads/android-charts-framework.8260/#content...

 

This example is similar to the previous example...

 

The File methods in B4J are identical to B4A File methods.

Text file methods

File.WriteString - Writes the given text to a new file.
File.ReadString - Reads a file and...

 

You can find the documentation page here: http://www.b4x.com/b4j/documentation.html

Note that the documentation is not yet complete.

 

B4J development tool is similar to Basic4android. The language and IDE are mostly identical.

The APIs (methods, keywords and libraries) are identical in some cases and different in other cases...

 

B4J currently supports two types of applications: UI applications (based on JavaFX) and Non-UI applications.

Non-UI applications are standard Java applications. Usually the input to such...

 

B4J allows you to show modal dialogs or modal forms.
The difference between a modal form to non-modal form is that with a modal form the calling code will only continue after the form is closed...

 

You can create an RDC client with B4J in the same way as done with B4A: Remote Database Connector - Connect to any remote DB...

 

The computer chooses a number and you need to find the correct number.

Sub Process_Globals
   Private fx As JFX...

 

For new projects it is recommended to use B4XSerializator instead of this solution.

AsyncStreamsObject allows you...

 

Latest version available here: https://www.b4x.com/android/forum/threads/b4x-dbutils-2.81280/

This example demonstrates how DBUtils module can be used in B4J.

DBUtils was modified to...

 

This example uses a Canvas node together with a Timer to draw a moving smiley.

The Canvas node is a special node the you...

 

This example downloads an html page, parses it and finds the image links. It then uses a class named ImageDownloader to...

 

When you create a new UI project, the project starts with a single code module with the following code:

#Region  Project Attributes
   #MainFormWidth: 500
   #MainFormHeight: 500
#End Region...

 

This is an old and irrelevant tutorial.

 

Edit: See this page for more information about B4J: https://www.b4x.com/b4j.html

 

Edit: Most updated instructions are available here: https://www.b4x.com/b4j.html