Re: public static final - compilation error

Kamil Roman wrote:
Hi,
Hi! 

is it possible to initialize a public static final member of a class in
the class' constructor? I try to do this and I receive error message:

variable PLUS is declared final; cannot be assigned. 

The code is:

public class Stale { public static final String[] OPERATORS = new String[] {
new String("+"),
new String("-"),
new String("*"),
new String("/"),
};
public static int PLUS; //final
public static int MULTI; //final
public static int MINUS; //final
public static int DIVIDE;//final
public Stale()
{
for (int i = 0; i < OPERATORY.length; i ++)
{
if(OPERATORY[i].equals("+")) PLUS = i;
if(OPERATORY[i].equals("-")) MINUS = i;
if(OPERATORY[i].equals("*")) MULTI = i; if(OPERATORY[i].equals("/")) DIVIDE = i;
}
}
}

--
Thanks for help
KR

No, you can't initialize 'static final' things in a constructor or any non-static method. But you can (and probably want to) initialize them in the class initializer:

  static
  {
    for (int i = 0; i < OPERATORY.length; i ++)
    {
        if(OPERATORY[i].equals("+")) PLUS = i;
        if(OPERATORY[i].equals("-")) MINUS = i;
        if(OPERATORY[i].equals("*")) MULTI = i;
        if(OPERATORY[i].equals("/")) DIVIDE = i;
    }
  }

Hence, there is no need for your constructor anymore.

--
"Thomas:Fritsch$ops:de".replace(':','.').replace('$','@')

.

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