Setting a generic parameter of a class through reflection?

So before I ask the question, I feel that I must explain my situation for the question to make any logical sense:

I have the generic nested class ThreadHierarchy<P,C extends ExtendedThreadHandler<T>> (where P represents the parent and C, the child) inside of the generic class ExtendedThreadHandler<T> (where T represents type), and I need to create an instance of the TheradHierarechy class in the main constructor of its superclass like so:

    //Thread State initializer
public ExtendedThreadHandler() {
    this.setThreadClass((T)this);
    this.setThreadName(getClassInstance().getClass().getSimpleName());
    ThreadHierarchy th = new ThreadHierarchy<Thread.currentThread().getClass(), T>(true);
}

The issue with this is that while instantiating classes, the generic input values only accept string literals such as the predefined generic type T from ExtendedTheadHandler<T>, and therefore, I cannot input a method call or variable into the instance parameters.

Is there a way to either:

A) Input return values, in this case a class, into a generic class or method by defining a new instance variable to pass in? (I couldn't figure out how to do this)

OR

B) Use reflection to create an instance of the class where the values of P and C can be assigned manually?