main.dart

import 'dart:convert';



void printToString(Object ex ){
  print(ex.toString());
}


class MyCustomExceptionObject {
  final String message;
  
  MyCustomExceptionObject(this.message);

  @override
  String toString(){
    throw Exception("not implemented");
  }
}

void main() {
  Object exceptionObject = Exception("This is a good error message");
  Object myCustomExceptionObject = MyCustomExceptionObject("This is a Custom exception");

  printToString(exceptionObject.toString());
  printToString(myCustomExceptionObject.toString());
  }