Maven 1.1 ignores maven.compile.target=1.5 with a 1.6 JDK
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Key: MPJAVA-47
URL: http://jira.codehaus.org/browse/MPJAVA-47
Project: Maven 1.x Java Plugin
Issue Type: Bug
Affects Versions: 1.6.1
Environment: Debian Stable x86
Java 1.6.0_02-b05 and
Java 1.5.0_10-b03
Reporter: Matt Ray
Priority: Minor
I recently attempted upgrading from 1.0.2 to 1.1 and had been using JDK 1.6 on
the project for several months. I have been using source compiled with Maven
1.0.2 and JDK 1.6 with the properties
maven.compile.source=1.5
maven.compile.target=1.5
in my project.properties and the deployment environment has been using the 1.5
JDK. There have been no issues with this previous configuration. I switched
in Maven 1.1 and with a few minor fixes, was able to compile and deploy
everything. But now when my appserver (JBoss 4.0.4) starts up, I get this
exception:
ava.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
...
If I change back to a 1.5 JDK for compiling, the issue goes away. Running my
build with "-X" shows
'-target'
'1.5'
'-g:lines,vars,source'
'-source'
'1.5'
but something appears to be getting through with Maven 1.1 that didn't get
through with 1.0.2.
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