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What are the JSR-250 Annotations? Explain them.

Answer»

Spring has JSR-250 based annotations which include PostConstruct, PreDestroy and Resource annotations.

  • PostConstruct − This annotation can be used as an alternate of initialization callback.

  • PreDestroy − This annotation can be used as an alternate of destruction callback.

  • Resource − This annotation can be used on fields or setter methods. The Resource annotation takes a 'name' attribute which will be interpreted as the bean name to be injected. You can say, it follows by-name autowiring semantics.


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