Annotations have been more successful than XML

Annotations came to JDK with JDK5 (2004) since then they evaluated and are accepted so widely and even became more powerful and useful than XML in just 4 years.

While you are developing a project with java at any scale you’ll need a very large number of XML files defined in very different API’s and DTD/XSDs. Which makes configuration very complex.

eg:struts.xml,tiles.xml,validation.xml,hibernate.cfg.xml,spring-context.xml,web.xml,and so on

Although it is easy to read and modify there are lots files

Now with annotations:

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JAXB quickstart via maven2

JAXB is a java framework to XML-Java transformations.

JAXB is 2.1 has a very simple API like castor and jibx And annotation driven transformers. Although those configurations can be written manually JAXB has a code generator to generate java files from XSD files. Here is sample JAXB tutorial using maven2:

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