Hi there,

I understand below is not good code, but JDK compiler did not complains, however the IntelliJ won't leave it alone and labeled it with a red mark that I can not remove!

public class test {
     public static void main(String[] args) {
          Integer i = 0;
          System.out.println((i++).toString());
     }
}

It says "toString()" is not defined.

Thanks,

Zemian