I've been messing around today trying to get the Openwire Generator working on my Linux box with AMQ CPP and kept getting the error shown below, however after a few hours of digging I found a reference to problems with the tools.jar in 1.6 as apposed to 1.5. So since I'm using JDK 1.6 I reconfigured my pom.xml in AMQ-CPP to point to tools.jar from a JDK 1.5 directory and everything started working again.
Have you guys seen anything like this before? [INFO] Executing tasks Parsing source files in: /home/tabish/dev/activemq/activemq-trunk/activemq-core/src/main/java [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error executing ant tasks Embedded error: org.codehaus.jam.internal.javadoc.JavadocClassloadingException: An error has occurred while invoking javadoc to inspect your source files. This may be due to the fact that $JAVA_HOME/lib/tools.jar does not seem to be in your system classloader. One common case in which this happens is when using the 'ant' tool, which uses a special context classloader to load classes from tools.jar. This situation elicits what is believed to a javadoc bug in the initial release of JDK 1.5. Javadoc attempts to use its own context classloader tools.jar but ignores one that may have already been set, which leads to some classes being loaded into two different classloaders. The telltale sign of this problem is a javadoc error message saying that 'languageVersion() must return LanguageVersion - you might see this message in your process' output. This will hopefully be fixed in a later release of JDK 1.5; if a new version of 1.5 has become available, you might be able to solve this by simply upgrading to the latest JDK. Alternatively, you can work around it by simply including $JAVA_HOME/lib/tools.jar in the java -classpath parameter. If you are running ant, you will need to modify the standard ant script to include tools.jar in the -classpath. Regards Tim
