Java runtime mismatch with Springboot 3 and data flow 2.11.3

[shobhakamath]

Description: Exception in thread "main" java.lang.UnsupportedClassVersionError: org/springframework/boot/loader/JarLauncher has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

Release versions: spring-cloud-dataflow-server-2.11.3.jar

Steps to reproduce: You have a springboot batch program using Springboot 3.1.8 and spring batch 5 version and java 17. Once the application is registered to the spring data flow and create a task and then launch it, this error can be reproduced.

Screenshots:

Additional context: The database is Oracle database.

[cppwfs]

This sounds like your SCDF instance is running on JVM 8 and is trying to run a Boot3/Batch5 app that is Java 17. Make sure you are running your SCDF instance on JVM 17+.

[corneil]

You can solve the difference by using deployer.<task>.javaHomePath.3=/path/to/java17

[shobhakamath]

Resolved. The issue was I was running in JRE 8 . All that I did was to run the following command sing jdk17 to make it work. Thank you for your quick response.

 path to jdk17/bin/java -jar spring-cloud-dataflow-server-2.11.3.jar