Doubt with Float class

[Gitesh Ramchandani]

What is the output
{
Float f1 = new Float("4.4e99f");
Float f2 = new Float("-4.4e99f");
Double d1 = new Double("4.4e99");
System.out.println(f1);
System.out.println(f2);
System.out.println(d1);
}
a) Runtime error
b) Infinity
-Infinity
4.4E99 ///why?
c) Infinity
-Infinity
Infinity
d) 4.4E99
-4.4E99
4.4E99
Correct answer is b)

Doubt: how is it working for Double and not Float?

pls help
regards,
gitesh

[Abdullah Mamun]

This is because of the range of float. The largest positive finite float literal is 3.4028235e38f. The smallest positive finite nonzero literal of type float is 1.40e-45f.

You will get a compiler error if you use a float literal out of the specified range like the following code

Float f1 = 4.4e99f; 

For more details have a look here

[Jesper de Jong]

It does not work as you expect for Float because the maximum value that you can store in a Float is approximately 3.4e38, and 4.4e99 is larger than that.

The range for Double is larger (the max. is approx. 1.8e308).

(Note: Please quote your sources).

[Chris Stann]

I did not think we are required to know the range of values each primitive type and their respective wrapper class can hold for the exam. Did this change?
[ August 28, 2007: Message edited by: Chris Stann ]

[raghu nagabandi]

This is because of the range of float. The largest positive finite float literal is 3.4028235e38f. The smallest positive finite nonzero literal of type float is 1.40e-45f.

[Gitesh Ramchandani]

Source:

Amit Poddar-Q29

[Gitesh Ramchandani]

thanks for help