Do While Loop / Symbol Not Recognized

The compiler tells me that the variable after the while is not recognized.

What I especially don't understand is that the variable is defined and accepted in the character input and the swicth but later on is not recognized. I'm sure of this because I wrote the entire program, and then compiled it afterwards. I was therefore able to see the compiler advancing as the code was corrected

The error message is "cannot find symbol - variable choix"

do {
System.out.println ("1); Acheter Patons ");
System.out.println (" 2); Fabriquer baguettes ");
System.out.println (" 3); Vendre baguette ");
System.out.println (" q ou Q); Quitter ");
char choix = Clavier.lireChar();
  switch (choix) {

[Code] ....