Get method reference from class object in JAVA 8

I have class names unknown to my factory class that I obtained via runtime input.

Currently I have solution to use reflection to create instances of these classes in my factory class, but I want to see if it is possible to pass the method reference new of these classes to my factory class so that I don't need to use reflection. e.g.:

public interface MyFactory {
    MyClass getInstance(String s);
}
public static MyFactory getRuntimeClass(Class<? extends MyClass> cls) {
    return cls::new;
}
public static void main(String[] args) {
    MyClass mySubClass = getRuntimeClass(Class.forName(args[0]).asSubClass(MyClass.class)).getInstance("test");
}

The above does not work because the method reference new is not obtainable from the Class object cls.

How do you fix the above with method reference, without reverting back to use reflection?

P.S. Yes I have code to check the input, all the subclasses all have a constructor that takes a String as input.