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Welcome to B4X forum!
B4X is a set of simple and powerful cross platform RAD tools:
- B4A (free) - Android development
- B4J (free) - Desktop and Server development
- B4i - iOS development
- B4R (free) - Arduino, ESP8266 and ESP32 development
Search Results
B4J Question App start error, if #MergeLibraries: false - peacemaker Sep 5, 2022 .0.9.jar jetty-webapp-11.0.9.jar jRandomAccessFile.jar jServer.jar jShell.jar json.jar mchange... is: c:\TEMP\test>java -jar 1.jar main._process_globals (java line: 513) java.lang....java:521) ... 3 more c3p0-0.9.5.2.jar c3p0-oracle-thin-extras-0.9.5.2.jar http2-common-11.0.9.jar http2-hpack-11.0.9.jar http2-server-11.0.9.jar JavaObject.jar jCore.jar jetty-alpn-java-server-11.0.9.jar jetty-alpn-server-11.0.9.jar jetty-http-11.0.9.jar jetty-io-11.0.9.jar jetty-jakarta... B4J Question Jshell on my mac error - Jack Bodewes Jul 30, 2016 Have two app created in Windows 10 Reserveren.jar Updres.jar In my windows everything works very well. I copied these two file to my Mac. I doubleclick My mouse and both apps. Works fine. Now I want to Updres.jar Jshell in Reserveren.jar with: shel2.Initialize("shel2", "java", Array As String("-jar", "Updres.jar")) shel2.WorkingDirectory = File.DirApp shel2.Run(10000) Error: Notification of java newer version download. I did. Java Version 8 Update 101... B4J Question Run jShell in separate thread - jmon Nov 28, 2016 I have is that the new file gets closed when I close the updater. This is because I run the new file with jShell: dim sh as Shell sh.Initialize("", "sudo", Array("java", "-jar", "/home/pi/myUpdatedApp.jar")) sh.run(5000) exitapplication As I understand it, the "myUpdatedApp.jar" is considered as a sub-process of my updater, and when I close the updater... of the args of jShell, but same problem. Is there a way to run jShell in a separate process, an not close... B4J Tutorial Running Jar with double click (in Java OpenJDK 11+ ) - epiCode Mar 16, 2023 (6 reactions) As shared in multiple places in this forum Java 11 OpenJDK does not allow to run jar files directly... the following two commands:
ftype JARFile="c:\java\bin\javaw.exe" -jar --module-path c... B4J Library [B4j] Jave2 FFMPeg Library - stevel05 Sep 3, 2022 (15 reactions) After using FFMpeg from the command line, I came across Jave2 (Java Audio Video Encoder) a java wrapper based on FFMpeg. Useful to integrate FFMpeg into your app without having to use jShell. The library jars are quite large, so if you only want to use it for the odd conversion it might be better... into your B4j additional libraries folder. Download slf4j-api-2.0.0.jar and slf4j-nop-2.0.0.jar from.... The test apps use nativebin-win64. You will need to change that in the #AdditionalJar directive if... Wish Update sqlite-jdbc-3.7.2.jar dependency in B4XTable - aeric Aug 5, 2024 (4 reactions) sqlite-jdbc-3.7.2.jar is the default SQLite JDBC library comes with B4X IDEs installation... available in newer version of SQLite 3.25+. Even though I have specified #AdditionalJar to newer... I renamed sqlite-jdbc-3.7.2.jar so the project cannot find or ignore this library. Then I got compilation error that the project is still depends on the old/default sqlite-jdbc-3.7.2.jar I need to find.... Finally, I found the only library which has dependency to sqlite-jdbc-3.7.2.jar is B4XTable... B4J Question How can i run my compiled jRDC.jar in my windows Server ? IF jRDC.jar isn't running - Rodolfo Moguel Nov 18, 2020 i want to connect Mysql with b4a app i try to run with differents javas , and i try too with java to exe software. Sending me this Error: Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError: b4j/example/main has been compiled by a more recent version of the Java Runtime (class file version 53.0)... B4J Code Snippet MySQL / MariaDB jar, driver and jdbc url - Erel Aug 13, 2025 (13 reactions) MySQL 1. Jar is available here: https://dev.mysql.com/downloads/connector/j/ Choose the Platform Independent option. Put the jar in the additional libraries folder. 2. Add jSQL library and a reference to the jar (change version as needed): #AdditionalJar: mysql-connector-j-9.4.0 3. Driver.../database_here", Username, Password) MariaDB 1. Jar: https://mariadb.com/downloads/connectors/connectors-data-access/java8-connector/ (Java 8+ connector) 2. #AdditionalJar: mariadb-java-client-3.5.5 3... B4J Question Can i use Canvas in a nonui app (server app)? - Erel (first post) May 3, 2020 (1 reaction) Can i create a UI app (and not show any Form) and run this jar on a Ubuntu VPS? Yes. You can create a UI app and don't show the main form. However a server app (based on jServer) should be a real non-ui app. You can start a another jar with jShell.... B4J Code Snippet Rename result.jar using #Macro or #CustomBuildAction - aeric Sep 24, 2025 (2 reactions) Method 1: rename existing jar
#Macro: Title, Rename, ide://run?file=%COMSPEC%&Args=/c&Args=ren&Args=result.jar&Args=libget-non-ui.jar
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