Ops, ActiveMQ is written in Java, of course

activemq/activemq.spec

@@ -32,7 +32,7 @@ Class:        EVAL
 Group:        Network
 License:      Apache
 Version:      5.2.0
-Release:      20090911
+Release:      20091011
 
 #   list of sources
 Source0:      http://www.apache.org/dist/activemq/apache-activemq/%{version}/apache-activemq-%{version}-bin.tar.gz
@@ -43,7 +43,7 @@ Source2:      rc.activemq
 Prefix:       %{l_prefix}
 BuildRoot:    %{l_buildroot}
 BuildPreReq:  OpenPKG, openpkg >= 20060823
-PreReq:       OpenPKG, openpkg >= 20060823
+PreReq:       OpenPKG, openpkg >= 20060823, java
 AutoReq:      no
 AutoReqProv:  no