TechEmpower.FrameworkBenchmarks/frameworks/Java/grizzly/src-jersey/main/java/hello/JsonResource.java

package hello;

import static javax.ws.rs.core.MediaType.APPLICATION_JSON;

import com.sun.jersey.spi.resource.Singleton;
import java.util.Collections;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;

@Singleton
@Path("/json")
public class JsonResource {

  @GET
  @Produces(APPLICATION_JSON)
  public Object json() {
    return Collections.singletonMap("message", "Hello, World!");
  }
}