Hi
Does anybody know if it is it possible to use Logback on JDK1.4? I get an
UnsupportedClassVersionError when trying to instantiate a Logback logger
through SLF4J.
I've had a look at pom.xml and see that the jdkLevel is set to 1.5. So the
exception makes sense - I'm trying to run 1.5 code against a 1.4 jdk... That
said I find it strange the Logback only supports jdk1.5 and higher. Anybody
running it against a 1.4 jdk? If so, how did you manage to do it?
Thanks.
To be complete:
The code that I'm using is very simple:
Logger log = LoggerFactory.getLogger(InitLog.class);
log.debug(">>> Logging Initialized");
The exception I'm getting:
java.lang.UnsupportedClassVersionError: org/slf4j/LoggerFactory (Unsupported
major.minor version 49.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java(Compiled Code))
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java(Compiled
Code))
at
com.ibm.ws.classloader.CompoundClassLoader._defineClass(CompoundClassLoader.java:446)
at
com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java(Compiled
Code))
at
com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:300)
at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
at za.ibm.slftest.servlet.InitLog.init(InitLog.java:15)
Regards
Fouche du Preez
