How to instantiate a class just by having the class object and cast the result just by using the class from which it was instantiated?

Question

I have the following problem: I have a class object(MyClass.class) and from that class object i need to instantiate an object.That is the easy part ois MyClass.class.getDeclaredConstructor().newInstance() (the class has only one constructor which takes no arguments).

The tricky part(or so i think) is to cast the resulted object to the appropriate type(MyClass) using the class object with which i created. Note that i can't write the following code (MyClass)MyClass.class.getDeclaredConstructor().newInstance()

If someone can help me with this that would be much appreciated.

Answer 1

Write:

MyClass.class.cast(myInstance);

See also the relevant Javadoc . Not that this would be very useful apart from null-checking and type-checking:

public T cast(Object obj) {
    if (obj != null && !isInstance(obj))
        throw new ClassCastException(cannotCastMsg(obj));
    return (T) obj;
}

... but this is how you cast a class using reflection, and I suspect that this question is about some test or assignment anyway