-0.0 == 0.0 ? help

[sarim raza]

What will happen if you invoke the following method? B is the answer but why?
-------------
1: public void check()
2: {
3: System.out.println(Math.min(-0.0,+0.0));
4: System.out.println(Math.max(-0.0,+0.0));
5: System.out.println(Math.min(-0.0,+0.0) == Math.max(0.0,+0.0));
6: }

A) prints -0.0, +0.0 and false.
B) prints -0.0, +0.0 and true.
C) prints 0.0, 0.0 and false.
D) prints 0.0, 0.0 and true.

[Ajith Kallambella]

Zero is signed and hence negative zero is less than positive zero. However, for equality purposes( ie == ) they are equal!!.
Strange as it may seem, this is one of my favourite gotcha! 's
Ajith

[shanks iyer]

Thanks Ajith I also always semed to have this doubt.
Regards,
Shankar.