Integer barrelNumbers = 1000; system.debug(' value of barrelNumbers variable: '+barrelNumbers);
Standard input is empty
Object: Integer error: did not understand #barrelNumbers MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254) Integer class(Object)>>doesNotUnderstand: #barrelNumbers (SysExcept.st:1448) UndefinedObject>>executeStatements (prog:1)
./prog:2: expected expression