Java - NoSuchMethodException with reflection

Question

I get a NoSuchMethodException when executing:

operacionDTO.getClass().getMethod("setPrioridad").invoke(operacionDTO, 0);

java.lang.NoSuchMethodException: xxxx.api.service.dto.RegasificacionDTO.setPrioridad()

But class RegasificacionDTO does have a public method called setPrioridad(int i), and if when debugging I call:

operacionDTO.getClass().getMethods()

Then I get an array of Method in which there is a setPrioridad. I've tried with some other similar methods and I get the same error.

Thilo · Accepted Answer · 2013-04-11 08:55:53Z

11

You need to include the parameter signature.

 operacionDTO.getClass().getMethod("setPrioridad", Integer.TYPE)

answered Apr 11, 2013 at 8:55

Thilo

264k107 gold badges527 silver badges674 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

AlexR · Accepted Answer · 2013-04-11 08:57:29Z

4

Method getMethod() accepts method name and an varargs array of parameter types. In your case you should call getMethod("setPrioridad", int.class) and everything will work.

This is because in java (as in most object oriented languages) you can define several methods with the same name and different signatures, so the system distinguishes among them using given parameter types.

answered Apr 11, 2013 at 8:57

AlexR

116k16 gold badges137 silver badges216 bronze badges

Comments

Infinite Recursion · Accepted Answer · 2015-10-15 14:02:40Z

1

 operacionDTO.getClass().getMethod("setPrioridad",new Class[]{Integer.TYPE or Integer.class}).invoke(operacionDTO, 0);

edited Oct 15, 2015 at 14:02

Infinite Recursion

6,57528 gold badges42 silver badges51 bronze badges

answered Apr 11, 2013 at 8:57

user2268521

263 bronze badges

Collectives™ on Stack Overflow

Java - NoSuchMethodException with reflection

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related