import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collection;

/**
 * Created by tom on 26.05.16.
 */
public class GenericReflectionExample {

    public static void main(String[] args) throws Exception{

        Processor<?> processor = new StringProcessor();

        Method method = processor.getClass().getMethod("process", Collection.class);
        Type parameterType = method.getGenericParameterTypes()[0];
        System.out.println(parameterType);

        System.out.println(((ParameterizedType)parameterType).getActualTypeArguments()[0]);

    }

    interface Processor<T>{

        void process(Collection<T> collection);
    }

    static class StringProcessor implements Processor<String> {

        @Override
        public void process(Collection<String> collection) {
            System.out.println("Consume String");
        }
    }

    static class IntegerProcessor implements Processor<Integer> {

        @Override
        public void process(Collection<Integer> collection) {
            System.out.println("Consume Integer");
        }
    }
}