The javax.ws.rs.container.DynamicFeature contract is used by the JAX-RS runtime to register providers, such as interceptors and filters, to a particular resource class or method during application deployment.

The following code snippet shows how you can build the DynamicFeature provider. This example applies RequestLoggerFilter to resource methods annotated with @RequestLogger.

import javax.ws.rs.container.DynamicFeature; 
import javax.ws.rs.container.ResourceInfo; 
import javax.ws.rs.core.FeatureContext; 
import javax.ws.rs.ext.Provider;  
 
@Provider 
public class DynamicFeatureRegister implements DynamicFeature { 
    @Override 
    public void configure(ResourceInfo resourceInfo, 
        FeatureContext context) { 
        //This simple example adds RequestLoggerFilter to methods 
        //annotated with @ RequestLogger 
        if (resourceInfo.getResourceMethod().isAnnotationPresent 
            (RequestLogger.class)) { 
            context.register(RequestLoggerFilter.class); 
        } 
    } 
} 

The DynamicFeature interface is executed at deployment time for each resource method. You can register filters or interceptors on the desired resource class or method in the DynamicFeature implementation.