Compile Error: Cannot Find Symbol

Question

I am receiving the error cannot find symbol when the code reaches the recursive call for increment and I have no idea why? Here is the code for increment. Any help will be

Answer 1

String has no method called increment. And of course it isn't a recursive call because you are inside an object(which object? in your code there isn't a class definition) , meanwhile you are invoking increment upon a String object.

In addition your temp field is never used. If you want to share it between method calls you can try something like this:

public void increment (String temp){}

and then pass it while calling it:

String temp = new String(num.substring(0, num.length()-2));
increment(temp);

Of course your function can't work like that. temp parameter should be managed inside your increment method. Review your logic. It's no more a matter of syntax. If you can't change the method signature then declare temp as a field of your BigNatural class:

public class BigNatural {

private String num; 
private String temp
......

and inside increment method simply do:

temp = new String(num.substring(0, num.length()-2));