This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.

As not everyone has a copy of the book (including myself), you might find that you get more responses if you were to include the original question in your post.

I believe that in b 2.3 is truncated to an int value of 2, thus the version of Math.max is the one that takes 2 ints. And in D the -2.8f is widened to a double, thus in this case the version of Math.max is the one that accepts 2 doubles.

Mansi Vyas
Greenhorn

Joined: Jul 01, 2003
Posts: 27

posted

0

Sorry for not including the question. Here it is... Which of the following are valid calls to Math.max? Choose all that apply. A. Math.max(1,4) B. Math.max(2.3, 5) C. Math.max(1,3,5,7) D. Math.max(-1.5, -2.8f) In choice B, I think that the 5 is being implicity converted to a 5.0(double). In choice D, I think that -2.8f is being implicity promoted to a double. Both are invoking the following method signiture, double max(double a, double b). Is this correct? Thanks. Mansi

Correct... The thing to remember here is this order: byte short int long float double So, for example, in option D. we have a float and a double, so we know that float can be implicitly promoted to a double. HTH

I'm not going to be a Rock Star. I'm going to be a LEGEND! --Freddie Mercury