Assuming the Employee class has a sayName method that returns the employee's name (which is Fred), the Object class has no such method, and given the following code, what will be the output? Employee e = new Employee(); Object o = e; o.sayName(); Fred, because "Object o=e;" makes "o.sayName();" equivalent to "e.sayName();" A compiler error because there is no sayName method in the Object class. Nothing. The o object has not been assigned a name even though it inherits from Employee. A compiler error because you can't assign an Employee object to an Object reference variable.
Assuming the Employee class has a sayName method that returns the employee's name (which is Fred), the Object class has no such method, and given the following code, what will be the output? Employee e = new Employee(); Object o = e; o.sayName(); Fred, because "Object o=e;" makes "o.sayName();" equivalent to "e.sayName();" A compiler error because there is no sayName method in the Object class. Nothing. The o object has not been assigned a name even though it inherits from Employee. A compiler error because you can't assign an Employee object to an Object reference variable.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:Assuming the Employee class has a sayName method that returns the
employee's name (which is Fred), the Object class has no such method,
and given the following code, what will be the output?
Employee e
Object o = e;
o.sayName();
O
O
=
new Employee();
Fred, because "Object o=e;" makes "o.sayName();" equivalent to
"e.sayName();"
A compiler error because there is no sayName method in the Object class.
Nothing. The o object has not been assigned a name even though it inherits
from Employee.
A compiler error because you can't assign an Employee object to an Object
reference variable.
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