Thread: Weird String .length() method

public class BinaryToDecimalRecursive {
 
    public static void main(String[] args) {
 
        int decimal = toDecimal("10");
    }
 
    public static int toDecimal(String str) {
 
        System.out.println(str.length()); // this was printing 3 before!
 
        if (str.length() == 1) {
 
            return Integer.parseInt(str);
        }
        else {
 
            return 0;
        }
    }
}

as i was playing with my BinaryToDecimal recursive program, i bumped into something that makes me confuse, the code above is something i did to reproduce the error i encountered a while ago, but i was unable to produce it again, as you can see im passing a String argument with ofcourse(obviously) has a length of 2, but the weird thing i saw a while ago, when i tried to print its length, it gave me a length of 3, how come? ichecked and checked it, create another program where the length method call returns a valid string length, i close the code tab, ran some other programs, go back to this one again, then boom! it gave me a length of 2. Im sorry but i cant reproduce it again, im just curious why did it happen.

i just did every possible things in terms of code(printing out) just to monitor the behavior of the program, i wasn't actually expecting a very definitive response, i was just hoping that someone could have experience a very very weird thing just like this or may an idea to where i can start to narrow down my search, something like about the JVM? or is there a virus that could affect the runtime of a program in JVM? well i got a loads of viruses in my unit as of now. this will be an added risk-to-be-aware in case i do some things again and avoid the oh-my-god-whats-going-on thing just like what happened a while ago.

yes and thank you, i might just have over looking on something , and i actually found that there is no way a virus can breach the JVM or any bytecode that it loads.