What Is Qualifier Annotation in Spring

The @Qualifier annotation in Spring is used to differentiate a bean among the same type of bean objects. If we have more than one bean of the same type and want to wire only one of them then use the @Qualifier annotation along with @Autowired to specify which exact bean will be wired.

What is spring qualifier annotation?

The @Qualifier annotation in Spring is used to differentiate a bean among the same type of bean objects. If we have more than one bean of the same type and want to wire only one of them then use the @Qualifier annotation along with @Autowired to specify which exact bean will be wired.

What is the difference between @autowired and @qualifier?

The difference are that @Autowired and @Qualifier are the spring annotation while @Resource is the standard java annotation (from JSR-250) . Besides , @Resource only supports for fields and setter injection while @Autowired supports fields , setter ,constructors and multi-argument methods injection.