How to have a @PATCH annotation for JAX-RS?

I got answer here.

One will just have to define a custom Patch annotation, what that means is that you will have to write a PATCH.java file with following code:

@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@HttpMethod("PATCH")
public @interface PATCH {
}

Import the package containing PATCH.java and then you can use it like other HTTP method annotations:

@PATCH
@Path("/data/{keyspace}")
@Produces({ "application/json" })
public void patchRow(@PathParam("keyspace") String keyspace, String body) 
throws Exception

I used this @PATCH to send some JSON to my REST service.