App.java

package teste;

import java.util.Set;
import java.util.TreeSet;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

@ApplicationPath("rs")
public class App extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        Set<Class<?>> cls = new TreeSet<Class<?>>();
        cls.add(Echo.class);
        return cls;
    }
}