What is New in JAX-RS 2.0

...

package org.apache.cxf.customverb;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

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

Default Http Method

CXF 3.0.4 introduces a new extension, a org.apache.cxf.jaxrs.ext.DefaultMethod annotation. It can be used to match arbitrary HTTP methods on a single resource method. This can be used in some advanced scenarious for integrating the CXF JAX-RS runtime into non-JAX-RS environments as well as in cases where it is awkward/difficult to have every HTTP method listed for a given path segment. CXF users need to be aware using this option will lead to a non-portable JAX-RS code.

Return types

Either javax.ws.rs.core.Response or custom type can be returned. javax.ws.rs.core.Response can be used to set the HTTP response code, headers and entity. JAX-RS MessageBodyWriters (see below) are in charge of serializing the response entities, those which are returned directly or as part of javax.ws.rs.core.Response.

...

@Path("/")
public class Test1 {

 @Path("/bar")
 @POST 
 @Consumes({"application/json", "application/xml"})
 @Produces({"application/json", "application/xml"})
 public Order addOrder(OrderDetails details) {...}

}

Custom selection between multiple resources or operations

The JAX-RS selection algorithm has been designed with a lot of attention being paid to various possible cases, as far as the selection between multiple matching resource classes or methods is concerned.

...