Exception with (Custom) RestAuthenticationProcessingFilter Ordering

I am trying to add remainder authentication with a token to my application. I created a simple filter, doing nothing, print the message:

public class RestAuthenticationProcessingFilter extends GenericFilterBean {

@Override
public void doFilter(ServletRequest arg0, ServletResponse arg1,
        FilterChain arg2) throws IOException, ServletException {
    System.out.println(arg0);
            // EDIT 25/02/2014
            arg2.doFilter(arg0,arg1);
}

}

I am using Spring 4.0 and Spring Security 3.2 with JavaConfig.

I added this to my adapter:

@Override
        protected void configure(HttpSecurity http) throws Exception {

            /*
             * @RemarqueDev Différence entre permitAll et anonymous : permitAll
             * contient anonymous. Anonymous uniquement pour non connecté
             */
            http.addFilter(new RestAuthenticationProcessingFilter());
            http.csrf().disable().headers().disable();
            http.exceptionHandling().authenticationEntryPoint(new RestAuthenticationEntryPoint());

When I start the berth server, I get this message:

Nested in org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.servlet.Filter org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain() throws java.lang.Exception] threw exception; nested exception is java.lang.IllegalArgumentException: The Filter class my.package.config.RestAuthenticationProcessingFilter does not have a registered order and cannot be added without a specified order. Consider using addFilterBefore or addFilterAfter instead.:
java.lang.IllegalArgumentException: The Filter class com.jle.athleges.config.RestAuthenticationProcessingFilter does not have a registered order and cannot be added without a specified order. Consider using addFilterBefore or addFilterAfter instead.
    at org.springframework.security.config.annotation.web.builders.HttpSecurity.addFilter(HttpSecurity.java:1122)

Why?

thank