B4J Question JRDC.jar get error Java Virtual Machine Launcher

[johanpawan]

Dear,
JRDC.jar file is success release
but when running, I get this error when running..
i have create folder " libs " that included library that used
please help any solution.. ?

 

[Erel]

Run it from the command line with java -jar jrdc.jar

 

[johanpawan]

I get another Error on Windows 7 (debug, release is oke, but when error in command line )
any solution Sir ?
for more information ( all is well when debug, compile jrdc.jar and running in commnad line when using windows server 2019 )

 

[Erel]

Download Java 11: https://www.b4x.com/b4j.html
Use it instead of the installed Java.

 

[OliverA]

Ok. So you configured Java 11 in the IDE. As is, this does not get called when you try to start java from the command line

java -jar jRDC.jar

This command will call the previously (most likely Java 8) JRE. In order to use Java 11's JRE, you have to prepend the java command with the path. So for example I have @Erel's mentioned Java 11 installed in

C:\OpenJDK\jdk-11.0.1

to launch the above, I would have to do

C:\OpenJDK\jdk-11.0.1\bin\java.exe -jar jRDC.jar

Note: PLEASE don't post screen shots! I cannot copy/paste text from screen shots. I may stop replying to posts that just include screen shots instead of posting text as text. This is not solely directed at you. I'm just getting tired of having to switch back and forth between a graphic and the edit box here to type out stuff that I could just have copied and pasted. And yes, its short text, but sometimes my attention span is shorter...

 

[TILogistic]

first check which version of Java and environment variables

C:\>java -version
java version "1.8.0_251"
Java(TM) SE Runtime Environment (build 1.8.0_251-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.251-b08, mixed mode)

C:\>echo %JAVA_HOME%
C:\Program Files\Java\jdk1.8.0_241

A simple solution to run java 11.
Create a workable environment called JAVA11_HOME that contains the path of JDK11.

EXAMPLE (use set for session or setx for permanent)

C:\>set JAVA11_HOME=C:\OpenJDK\java-11.0.1

C:\>echo %JAVA11_HOME%
C:\OpenJDK\java-11.0.1

C:\>%JAVA11_HOME%/bin/java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)