Get actual type of generic type argument on abstract superclass

Question

I have a class like:

public abstract class BaseDao {

  protected Class getClazz() {
     return T.class;
  }

  /         


        

Answer 1

Common way to sort this issue in a secure way is to add a constructor to store the class of the type. Example in your context:

public abstract class BaseDao {
  private Class classT;

  BaseDao(Class classT){
    this.classT=classT;
  }

  protected Class getClazz() {
     return classT;
  }

  // ...

}