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What is Spring Java-Based Configuration? Give some annotation example.

 Java based configuration option enables you to write most of your Spring configuration without XML but  with the help of few Java-based annotations.
 An example is the @Configuration annotation, that indicates that the class can be used by the Spring IoC container as a source of bean definitions. Another example is the@Bean annotated method that will return an object that should be registered as a bean in the Spring application context.

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