java - How do I compare classes using reflection? -


I am trying to determine the square type of the square and then make something specific. For example, if the class is double , Then use the double specific method.

I am trying to use 

  if (f.getClass () == Double.class)

However , I am getting a compiler error:

"Incompatible Operant Type class

  • Capture # 1-of? Field & gt; and class

    What is the proper way to do this?

    Edit: To be more clear

    f is the type of field obtained from a reflection in the loop 

      (Field F: instance.getDeclaredFields ())

    • Interest The error message (I did not know that the '==' operator would check them). But on the basis of this, I suspect that your comparison is wrong: you are trying to see that the field class (theoretically Super-class, but only in theory - the field is final) is similar to double class, which can not be it.

    So: the comparison should work, if you give it the correct argument I suspect you want to do this May include:

    If (f.getType () == double. Class)

    Instead it should work, given that the double is a final square. Otherwise "isAssignableFrom" would be more appropriate.


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