B4J Question Problem running jars in CentOS

[roerGarcia]

[robertor@metro usr]$ java -jar JarManager.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: [B]anywheresoftware/b4a/keywords/Common : Unsupported major.minor version 52.0[/B]
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
[robertor@metro usr]$

I want to run B4J apps in CentOs.
I try first with an application -mine- and get the same error shown. (same app works in windows 7)
Then, try the jarmanager found in the forum with the same error

The OS is CentOS, the B4J lsat version.

Where is the error, what is missing... ?

thanks in advance.

roer

 

[TILogistic]

centos 6 or 7

java -version ??

and

you java version B4J compile ??

 

[roerGarcia]

java version "1.7.0_85"
OpenJDK Runtime Environment (rhel-2.6.1.3.el6_7-i386 u85-b01)
OpenJDK Server VM (build 24.85-b03, mixed mode)

[robertor@metro etc]$ more centos-release
CentOS release 6.7 (Final)

Tu hablas español. La aplicacion compila y corre en Windows. La transferi via ftp al CentOs solo para probar si funcionaba, en modo experimento-porque-no-tengo-mucho-que-hacer.

Deberia instalar el B4J en CentOS - alguien lo ha hecho ?

Saludos y gracias por contestar.

 

[udg]

Learn Cross Platform App Development IoT, Desktop & Server | B4J

B4J is a 100% free programming tool, similar to B4A that generates desktop, server and web applications.

www.b4x.com

Q: What are the requirements for UI apps developed with B4J?
A: Java 8u40+ is required. B4J UI apps will run on Windows, Mac and Linux computers.

Java 1.8.40 is the minimum version supported.

 

[roerGarcia]

Ok, deja investigar si puedo actualizar el java.
Luego reporto lo que resulte.
Gracias.

 

[TILogistic]

Java JRE Updating issue with CentOS

I have just recently installed CentOS on my little server box. I am in the process of transferring my servers from Windows Server to Linux/CentOS, and I'm running into a small problem. I checked "

stackoverflow.com

 

[TILogistic]

tienes VPS o Hosting??

 

[TILogistic]

sorry to the english forum

Post your question in spanish forum

Do you have VPS or Hosting?

 

[roerGarcia]

It is a real, physical server I mean. It is within the company network.

But they already indicated (udg) to me that it is a question of the java versions.

Anyway, solving the problem I will report it here.