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

See similar textbooks

Similar questions

Q.4 Explain steps in genetic algorithm.
GQ5 For binary coding of chromosomes (solutions) in genetic algorithms, how many chromosomes are involved in a single crossing operation? a). 1 b). 2 с). З d). 4
Create a MATLAB script file that solves matrices with the following conditions: a. Create a 4 x 4 vector C (range of vector numbers should be multiples of 3) b. Find the sums of columns 1 and 2 of C c. Find a version of C with rows 2 and 4 d. Display the fourth column of transpose C
I am what you call a perfectionist. I always strive for perfection, and I appreciate everyone and everything that is perfect. That is why I have recently acquired an appreciation for perfect numbers! I absolutely need to know which numbers from 1 to 1000 are considered perfect. From what I recall, a perfect number is a positive integer that is equal to the sum of all its divisors other than itself. Example: 6 is a perfect number because the divisors of 6 other than itself are 1, 2, and 3, and 1 + 2 + 3 = 6. c++ code
Q.3 State Euclid's Algorithm with example
السؤال 6 Find the GCD(121,88) (12pt) 3 Arial A T T TT T1 2 T. T QODX 田 OO KT -* Mashups J.O
Transcribed Image Text 2-a) A lightning strike on the fell on Jonathan's house and destroyed the whole house. Now he decided to build a new house and he is now choosing a location where he wanted to build it. Assume the whole area be of rectangular field of size NxM. The mayor did not let Jonathan's build the house on the places where the lightning strike. The mayor said that some of the cells of the field are dangerous for the foundation. There are exactly K such cells. The house will occupy a rectangular area in this stripe with sides parallel to the sides of the original site. Your task is to help Jonathan for finding each Li, H; (the lowest and the highest boundaries). Create a simple JAVA program that finds the maximum area of the house that Jonathan can build on the relevant site.
wt A = {2, 0, 2, 4, 5}. What does the summation below evaluate to? 37 39 41 43 45 Ο 49 Σαλ DEA
e5td
5
41
ar Heby wrile algovi thm tolind maximumnumber From tove two Mumber