[Java lista] SCJP vizsga

[Fisha]

Hello!

Hat max annyi, hogy ennyi erovel "talald meg a tiz kulonbseget a ket
kep kozott" feladatokat is adhatnanak, kb. ugyanennyi koze lenne a
javahoz...

Fisha                            mailto:fisha at freemail.hu

> Ebben hol a szivatás? Simán látszik, hogy THURSDAY nem deklarált sehol.

> Stivi

> Original Message:
> -----------------
> From: Jozsef Tabanyi joco at kac.duf.hu
> Date: Wed, 15 Aug 2007 14:44:53 +0200 (CEST)
> To: javalist at javagrund.hu
> Subject: Re: [Java lista] SCJP vizsga



> Csak egy pelda a szivatos kerdesekre:

>  Given:


>  1.  enum Days {MONDAY, TUESDAY, WEDNESDAY}
>  2.
>  3.  class Test {
>  4.    public static void main(String [] args) {
>  5.      int x = 0;
>  6.      Days d = Days.TUESDAY;
>  7.      switch(d) {
>  8.        case MONDAY: x++;
>  9.        case TUESDAY: x = x + 10;
> 10.        case WEDNESDAY: x = x + 100;
> 11.        case THURSDAY: x = x + 1000;
> 12.      }
> 13.      System.out.println("x = " + x);
> 14.    }
> 15.  }


> What is the result?


> A
>         x = 10
> B
>         x = 110
> C
>         x = 1110
> D
>         Compilation fails.
> E
>         An exception is thrown at runtime.


















> Option D is correct.
> Compilation fails because THURSDAY was never enumerated.
> It is valid to use a correctly defined and referenced enum in a switch.

> joco

> Jozsef Tabanyi
> mailto:jozsef at tabanyi.hu
> http://www.tabanyi.hu

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