Thread: Increment operators on char

i am trying to understand increment operators on char:

 
public class Ch8 {
 
	public static void main(String[] args) {
             char c = 'a';
             c++;
             c = c+1;  
      }
}

why does c++ lead to c = 'b' ? i understand why c =c +1 is a error but how come c++ gets away with that error??

c = c + 1; isn't necessarily in error per se. It's just when you add a char to an int, you get an int, so for this to work you must cast the result as a char:

c = (char) (c + 1); // this works

c++ does this automatically for you.

i understand why c =c +1

Why is it an error? I'm asking because it might shed light on why "c++;" is valid.

Exactly what happens when you say "c++;" involves all sorts of fussy details. They are described in the Java Language Specification 15.14.2. Postfix Increment Operator ++. Pay attention to what is says about the primitive narrowing conversion. You might want to compare that with what happens with simple assignment (5.2).