Question

If I have a class like this:

public class Whatever
{
  public void aMethod(int aParam);
}

is there any way to know that aMethod uses a parameter named aParam, that is of type int?

Answer 1

To summarize:

• getting parameter names is possible if debug information is included during compilation. See this answer for more details
• otherwise getting parameter names is not possible
• getting parameter type is possible, using method.getParameterTypes()

For the sake of writing autocomplete functionality for an editor (as you stated in one of the comments) there are a few options:

• use arg0, arg1, arg2 etc.
• use intParam, stringParam, objectTypeParam, etc.
• use a combination of the above – the former for non-primitive types, and the latter for primitive types.
• don’t show argument names at all – just the types.