Test if object is instanceof a parameter type

Question

Is there a way to determine if an object is an instance of a generic type?

public  test(Object obj) {
    if (obj instanceof T) {
        ...
    }
         


        

Answer 1

This will only work (partly) if you have an object of type T. Then you can get the class of that object, see java.lang.Class and find if it's the same as the object in question.

But note that this goes counter the very reason we have genrics: using a generic type is a way to say that you don't care what type it really is (up to upper and lower bounds that may be specified).