Installing rosjava_messages fails missing class CircularBlockingDeque

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Hi everyone,

I was trying to set up a new rosjava environment on Ubuntu 11.04 and ROS electric following the build guide. Building rosjava_messages fails as org.ros.concurrent.EventDispatcher.java (and others are missing) class org.ros.concurrent.CircularBlockingDequeue.

> Building > :rosjava_messages:compileJava > Resolving dependencies     
':rosjava_me:rosjava_messages:compileJava
:rosjava_messages:processResources UP-TO-DATE
:rosjava_messages:classes
:rosjava_messages:jar
:rosjava:compileJava       
/home/andreas/workspace/rosjava_core/rosjava/src/main/java/org/ros/concurrent/EventDispatcher.java:29: cannot find symbol
symbol  : class CircularBlockingDeque
location: class org.ros.concurrent.EventDispatcher<T> private final CircularBlockingDeque<SignalRunnable<T>> events;

Interestingly org.ros.concurrent.CircularBlockingQueue is there.

Could somebody please deploy CircularBlockingDequeue?

Thank you!

Best regards, Andreas