How Can I use NaN and infinity in Java

Question

http://ideone.com/NXG2b2 code link.
help me to solve this. how can I use NaN and infinity in if else to print something for NaN and infinity value

Answer 1

Did you fix it? I don't see an error.
Which line?

Answer 2

Nan isn't defined, you have to grab it from the double class.

Like so:

if(R1 != Double.NaN || R1 != Double.NEGATIVE_INFINITY)

Answer 3

Thanks

Answer 4

would you help me again? I got stuck with boolean oparator.
would you this out? and what to do now? >> http://ideone.com/NXG2b2

Answer 5

It Showed bad operand. I solve this but now stuck with results. I will seek
your help I can't fix it.