JSR 250

• Spring JSR-250 Annotations

Spring also JSR-250 based annotations which include @PostConstruct, @PreDestroy and @Resource annotations. Though these annotations are not really required because you already have other alternate
http://www.tutorialspoint.com/spring/spring_jsr250_annotations.htm

• JSR 250 is a Java Specification Request with the objective to develop annotations (that is, information about a software program that is not part of the program itself) for common semantic concepts in the Java SE and Java EE platforms

http://en.wikipedia.org/wiki/JSR_250