39. You are designing an application for a school and are given the following specific • For a given person, we must have methods to get the name, sex, and address of th • A student is a type of person and we can look up the student's name, sex, and addr student directory. • A teacher is a type of person and we can look up the teacher's name, sex, and addr faculty directory. Which of the following code snippets represents well-written code and the best desi problem (assume //code here represents valid code)?: * A. public class Person { String getName(); String getSex(); String getAddress(); } public class Student extends Person { public String getName() { //code here } public String getSex() { //code here } publ getAddress() { //code here} public class Teacher extends Person { public String getName() { //code here} public String getSex() { //code here } publ getAddress() { //code here } B. public interface Person { String getName(); String getSex(); String getAddress(); } public class Student implements Person { public String getName() { //code here } public String getSex() { //code here } publ getAddress() { //code here } public class Teacher implements Person { public String getName() { //code here } public String getSex() { //code here } publ getAddress() { //code here} C. public interface Person { String getName(); String getSex(); String getAddress(); } public class Student implements Person { String getName(); String getSex(); String getAddress(); } public class Teacher implements Person { String getName(); String getSex(); String getAddress(); } D. public abstract class Person { String getName(); String getSex(); String getAddress(); } public class Student implements Person { String getName(); String getSex(); String getAddress(); } public class Teacher implements Person { String getName(); String getSex(); String getAddress(); } E. Both C and D would work.
39. You are designing an application for a school and are given the following specific • For a given person, we must have methods to get the name, sex, and address of th • A student is a type of person and we can look up the student's name, sex, and addr student directory. • A teacher is a type of person and we can look up the teacher's name, sex, and addr faculty directory. Which of the following code snippets represents well-written code and the best desi problem (assume //code here represents valid code)?: * A. public class Person { String getName(); String getSex(); String getAddress(); } public class Student extends Person { public String getName() { //code here } public String getSex() { //code here } publ getAddress() { //code here} public class Teacher extends Person { public String getName() { //code here} public String getSex() { //code here } publ getAddress() { //code here } B. public interface Person { String getName(); String getSex(); String getAddress(); } public class Student implements Person { public String getName() { //code here } public String getSex() { //code here } publ getAddress() { //code here } public class Teacher implements Person { public String getName() { //code here } public String getSex() { //code here } publ getAddress() { //code here} C. public interface Person { String getName(); String getSex(); String getAddress(); } public class Student implements Person { String getName(); String getSex(); String getAddress(); } public class Teacher implements Person { String getName(); String getSex(); String getAddress(); } D. public abstract class Person { String getName(); String getSex(); String getAddress(); } public class Student implements Person { String getName(); String getSex(); String getAddress(); } public class Teacher implements Person { String getName(); String getSex(); String getAddress(); } E. Both C and D would work.
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:39. You are designing an application for a school and are given the following specifici
• For a given person, we must have methods to get the name, sex, and address of th
• A student is a type of person and we can look up the student's name, sex, and addr
student directory.
• A teacher is a type of person and we can look up the teacher's name, sex, and addr
faculty directory.
Which of the following code snippets represents well-written code and the best desig
problem (assume //code here represents valid code)?: *
A.
public class Person
{ String getName(); String getSex(); String getAddress(); }
public class Student extends Person
{ public String getName() { //code here } public String getSex() { //code here } publ
getAddress() { //code here}
public class Teacher extends Person
{ public String getName() { //code here } public String getSex() { //code here } publ
getAddress() { //code here }
B.
public interface Person
{ String getName(); String getSex(); String getAddress(); }
public class Student implements Person
{ public String getName() { //code here } public String getSex() { //code here } publ
getAddress() { //code here }
public class Teacher implements Person
{ public String getName() { //code here } public String getSex() { //code here } publ
getAddress() { //code here }
C.
public interface Person
{ String getName(); String getSex(); String getAddress(); }
public class Student implements Person
{ String getName(); String getSex(); String getAddress(); }
public class Teacher implements Person
{ String getName(); String getSex(); String getAddress(); }
D.
public abstract class Person
{ String getName(); String getSex(); String getAddress(); }
public class Student implements Person
{ String getName(); String getSex(); String getAddress(); }
public class Teacher implements Person
{ String getName(); String getSex(); String getAddress(); }
E. Both C and D would work.
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