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Posted by Barend Garvelink at 10:30 on Friday 26 October 
An interesting post by Dan Pritchett, What metadata? gives consideration to two often overlooked aspects of application development: configuration and logging. Both Dan’s post and the comments it drew are very much worth a read.
Posted by Hans-Jürgen Jacobs at 16:23 on Thursday 17 March
In this first half of a two-part article, author Ramnivas Laddad provides a conceptual overview of the new Java metadata facility and shows where AOP could most benefit from the addition of metadata annotations. He then walks you through a five-part design refactoring, starting with a metadata-free AOP implementation and concluding with one… [ibm.com
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Posted by Hans-Jürgen Jacobs at 10:42 on Thursday 20 January
Metadata, in the form of J2SE 5.0′s annotation, allow you to mark up your your code with declarative information, and then use reflection to pull out those annotations at runtime and use them. Jacob Hookom shows how these techniques can be used to validate input to your application. [onjava.com]
