Java Tutorial 70 - instanceof Operator
In this tutorial, I will show you how to use the instanceof operator. It tests whether an object is an instance of a class.
For example, if an object is not an instance of Student (either Student or Undergraduate or Graduate), it cannot be cast into a variable of Student. Using non-student object, getCode() would cause a compile error, because the Employee (or Faculty or Staff) class does not have the getCode method. The compiler cannot find a match for list.get(i).getCode. Therefore, it is necessary to cast list.get(i) into the Student type to tell the compiler that list.get(i) is also an instance of Student.
En esta página del sitio puede ver el video en línea Java Tutorial 70 - instanceof Operator de Duración hora minuto segunda en buena calidad , que subió el usuario Ken 24 abril 2020, comparta el enlace con amigos y conocidos, en youtube este video ya ha sido visto 156 veces y le gustó 3 a los espectadores. Disfruta viendo!
