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The QPID broker requires JDK 1.5 or later. If you're seeing this exception you don't have that version in your path. Set JAVA_HOME to the correct version and ensure the bin directory is on your path.

Wiki Markupjava.lang.UnsupportedClassVersionError: org/apache/qpid/server/Main (Unsupported major.minor version 49.0)
at java.lang.ClassLoader.defineClass(Ljava.lang.String;\[BIILjava.security.ProtectionDomain;)Ljava.lang.Class;(Unknown Source)
at java.security.SecureClassLoader.defineClass(Ljava.lang.String;\[BIILjava.security.CodeSource;)Ljava.lang.Class;(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(Ljava.lang.String;Lsun.misc.Resource;)Ljava.lang.Class;(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(Ljava.net.URLClassLoader;Ljava.lang.String;Lsun.misc.Resource;)Ljava.lang.Class;(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run()Ljava.lang.Object;
(URLClassLoader.java:194)
at jrockit.vm.AccessController.do_privileged_exc(Ljava.security.PrivilegedExceptionAction;Ljava.security.AccessControlContext;I)Ljava.lang.Object;(Unknown Source)
at jrockit.vm.AccessController.doPrivileged(Ljava.security.PrivilegedExceptionAction;Ljava.security.AccessControlContext;)Ljava.lang.Object;(Unknown Source)
at java.net.URLClassLoader.findClass(Ljava.lang.String;)Ljava.lang.Class;(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(Ljava.lang.String;Z)Ljava.lang.Class; (Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Ljava.lang.String;Z)Ljava.lang.Class;(Launcher.java:274)
at java.lang.ClassLoader.loadClass(Ljava.lang.String;)Ljava.lang.Class;
(Unknown Source)
at java.lang.ClassLoader.loadClassFromNative(II)Ljava.lang.Class;
(Unknown Source)

I'm having a problem binding to the required host:port at broker startup ?

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You should see the problem logged in here via log4j and a stack trace. Have a look at the other entries on this page for common problems. If the log file includes a line like:

Wiki Markup"2006-10-13 09:58:14,672 INFO \ [main\] server.Main (Main.java:343) - Qpid.AMQP listening on non-SSL address 0.0.0.0/0.0.0.0:5672"

... then you know the broker started up. If not, then it didn't.

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