-8

I have some doubt ,i want to know that is int π; is a valid syntax in Java Or Not because Java support UNICODE so according to me it can be valid but I want to make sure

Sean Landsman
  • 7,033
  • 2
  • 29
  • 33
user2134725
  • 1
  • 1
  • syntax for what, identifiers ? – vikingsteve Mar 05 '13 at 10:12
  • 2
    Did you try it? And **why not**? Also even if it is valid _syntactically_, it is not wise because of the _semantics_ to use an `int` with the name `π`. As you might have heard of it, `π` is a mathemathical constant... – ppeterka Mar 05 '13 at 10:12
  • 4
    Should surely be **double** π? Unless you want to redefine it as 3 or something. ;) – Matthew Watson Mar 05 '13 at 10:13
  • Yes, its a valid syntax. reffer this link http://stackoverflow.com/questions/12857340/naming-restrictions-of-variables-in-java – NPKR Mar 05 '13 at 10:13
  • Yes it's a valid variable name. [Refference link][1] [1]: http://stackoverflow.com/questions/12857340/naming-restrictions-of-variables-in-java – NPKR Mar 05 '13 at 10:14
  • Yes it's a valid variable name. [Refference link][1] [1]: http://stackoverflow.com/questions/12857340/naming-restrictions-of-variables-in-java – NPKR Mar 05 '13 at 10:15

1 Answers1

7

int π; is perfectly valid - as you say Java supports unicode so anything not reserved is fair game for identifiers.

Sean Landsman
  • 7,033
  • 2
  • 29
  • 33
  • 2
    Still, I would be careful about using 'weird' characters in method names that you expose. Some unit testing frameworks, for example, can freak out about that. Just be careful... – vikingsteve Mar 05 '13 at 10:14
  • 1
    `double π;` is even better, if you do not want to loose precision and do not want to aggravate the mathematicians around you... – Costis Aivalis Mar 05 '13 at 10:22
  • 2
    @CostisAivalis except that a `double` ofcourse also is not infinitely precise, so that it cannot contain the exact value of π. – Jesper Mar 05 '13 at 10:26
  • @Jesper Hahahahaha!!!! That's right! – Costis Aivalis Mar 05 '13 at 10:34
  • `π` is valid because it's a letter and identifiers may start with a letter, not solely because java supports unicode. `♟` cannot be used in identifiers for example even though it's unicode and not reserved. – Esailija Mar 06 '13 at 12:47