Home/ Questions/Q 8433911
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-10T06:30:58+00:00

I’ve a method in which I’m passing a generic argument. To execute one required

  • 0

I’ve a method in which I’m passing a generic argument. To execute one required method I need the class instance of the same. How can I get it.
There is a workaround which I’m using but I want to know how can we get the Class instance.

The snippet I’m using is:

public <T> T readModelWithId(Class<T> c, Serializable pk) {
    // Some code here.
    T t = (T)session.get(c, pk);
    // Some code here.
    return t;
}

The problem is that I don’t want to pass the Class instance in this method as it is same as the return type T which is of generic type.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You can’t do it because Java implements Generics using “type erasure”.

    http://docs.oracle.com/javase/tutorial/java/generics/erasure.html

    Looks like you are doing a generic DAO. I’ve done something similar here:

    http://www.matthews-grout.co.uk/2012/01/my-generic-hibernate-dao.html

    • 0