Support to Java 7?

I’m trying to use this with WebLogic 12.1.3 running on Java 7. When deploying the application I get the following error:

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::       (v1.5.15.RELEASE)
<Dec 11, 2018 4:41:26 PM BRST> <Error> <Class Loaders> <BEA-2162500> <Class, com.ibm.mq.spring.boot.MQConfigurationProperties, was compiled with an incompatible version of Java. Make sure that all the classes needed by the application have been compiled with a compatible java version. java.lang.UnsupportedClassVersionError: com/ibm/mq/spring/boot/MQConfigurationProperties : Unsupported major.minor version 52.0
java.lang.UnsupportedClassVersionError: com/ibm/mq/spring/boot/MQConfigurationProperties : Unsupported major.minor version 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:792)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:412)
        at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:366)
        Truncated. see log file for complete stacktrace
>

I’m on Spring Boot 1.5.15.RELEASE and using com.ibm.mq:mq-jms-spring-boot-starter:0.0.4.

I’m guessing this is because the package was built using Java 8… If so, is there a version built with Java 7? Any suggestions on how I could proceed? Thanks!

[ibmmqmet]

The downloads on maven central include the source files so you could try to recompile this library from the older levels.

Java 7 ended normal life several years ago, and the JRE shipped with the MQ libraries that this is wrapping is Java 8, so it didn’t seem to be a particular priority to use the obsolete version. And Spring itself has the Java 8 prereq these days.

[edwingsm]

This library’s initial version was build with Java 8 , Currently all spring dependencies are based on Spring boot 2.X which need java 8,

If you need to use this for Java 7 , no version of this library support that

Another option try to compile library against something below Spring boot 2.X not sure about that because last few changes of the library was basically to accommodate Spring boot 2.1.x changes

What I did was use the IBM all client jar and spring boot wrapper of 1.5 around it. Similar to this library.