Specifying generic collection type param at runtime (Java Reflection)

Question

I\'d like to get the generic type of a collection, using reflection, at runtime.

Code (JAVA):

Field collectionObject = object.getClass().getDeclaredF         


        

Answer 1

Copied from my post at: https://stackoverflow.com/questions/1004022/java-generic-class-determine-type/1005283#1005283

I've used a similar solution to what he explains here for a few projects and found it pretty useful.

http://blog.xebia.com/2009/02/07/acessing-generic-types-at-runtime-in-java/

The jist of it is using the following to determine the type parameter at runtime:

public Class returnedClass {
  ParameterizedType parameterizedType =
    (ParameterizedType) getClass().getGenericSuperClass();
 return (Class) parameterizedtype.getActualTypeArguments()[0];
}