Design a class named Person with fields for holding a person’s name, address, and telephone number. Write one or more constructors and the appropriate mutator and accessor methods for the class’s fields. Next, design a class named Customer, which extends the Person class. The Customer class should have a field for a customer number and a boolean field indicating whether the customer wishes to be on a mailing list. Write one or more constructors and the appropriate mutator and accessor methods for the class’s fields. Demonstrate an object of the Customer class in a simple program.
Answers
Answer:
Here is the Person class:
class Person { //class name
//below are the private data members/fields of Person class
private String name; //to hold name
private String address; //to hold address
private String phoneNo; // contains telephone number
public Person(String name, String address, String phoneNo){ //constructor of Person class with name, address and phoneNo as parameters
this.name = name;
this.address = address;
this.phoneNo = phoneNo; }
public String getName(){ //accessor method to get/access the name
return this.name; } //returns the name
public String getAddress(){ //accessor method to get/access the address
return this.address; } //returns the address
public String getPhoneNo(){ //accessor method to get/access the phone number
return this.phoneNo; } //returns the telephone number
//mutator methods
public void setName(String nam){ //mutator method to set the name
this.name = nam; }
public void setAddress(String addr){ //mutator method to set the address
this.address = addr; }
public void setPhoneNo(String phNo){ //mutator method to set the telephone number
this.phoneNo = phNo; } }
Here is the Customer class which extends the Person class:
class Customer extends Person{ //Customer class that is sub class of Person class
//below are the private data members/fields of Customer class
private String CustomerNo; //String type field to hold customer number
private boolean MailingList; //boolean field indicating whether the customer wishes to be on a mailing list
public Customer(String name, String address, String phoneNo, String custNum, boolean mail) { //constructor of Customer class that has parameters name, address and phoneNo (of Person class) and parameters custNum and mail ( of Customer class)
super(name, address, phoneNo); // super keyword is used to refer to Person objects and to access the Person class constructor
this.CustomerNo = custNum;
this.MailingList = mail; }
//accessor methods
public String getCustomerNo(){ //accessor method to get/access the customer number
return this.CustomerNo; }
public boolean getMailingList(){ //accessor method to get/access the boolean mailing list to check whether a person wants to be on mailing list
return this.MailingList; }
//mutator methods
public void setCustomerNo(String custNo){ //mutator method to set the customer number
this.CustomerNo = custNo; }
public void setMailingList(boolean mailing){ //mutator method to set the mailing list
this.MailingList = mailing; } }
Explanation:
Here is the demonstration class to demonstrate object of Customer class, calls Person and Customer class methods to display the Customer information such as name, address, phone number, customer number and if customer wants to receive mail.
import java.util.Scanner; //used to take input from user
class Demonstration{ //test class
public static void main(String args[]){ //start of main() function
Scanner input= new Scanner(System.in); //creates object of Scanner class
System.out.print("Enter Customer Name: "); //prompts user to enter name
String fname = input.nextLine();
System.out.print("Enter Customer Address: "); //prompts user to enter address
String address = input.nextLine();
System.out.print("Enter Customer Telephone Number: "); //prompts user to enter telephone number
String phoneNumber = input.nextLine();
System.out.print("Enter Customer Number: "); //prompts user to enter customer number
String customerNum = input.nextLine();
System.out.print("Does Customer wish to be on a mailing list? \nPress 1 for yes, 0 for no: "); //asks user if he wishes to receive mail
String choice = input.nextLine();
boolean mailList = (choice.equals("1")); //if user enters 1 indicating that he wishes to be on mailing list
Customer customer = new Customer(fname, address, phoneNumber, customerNum, mailList); //creates object of Customer class and calls Customer class constructor
System.out.println("\nCustomer Information: ");
System.out.println("Name: "+customer.getName()); //calls getName method of Person class using customer object to get the name and displays the name
System.out.println("Address: "+customer.getAddress()); //calls getAddress method of Person class using customer object to get the name and prints the address
System.out.println("Telephone Number: "+customer.getPhoneNo()); //calls getPhoneNo method of Person class using customer object to get the telephone number and prints phone number
System.out.println("Customer Number: "+customer.getCustomerNo()); //calls getCustomerNo method of Customer class using customer object to get the customer number and prints the customer number
System.out.println("Mailing List?: "+customer.getMailingList()); }} //calls getMailingList method of Customer class using customer object to get the mailing list and prints true of false on the basis of customers choice to be on mailing list.
Related Questions
Which class of IP address allows for the greatest amount of subnets and host devices?
a. Class A
b. Class B
c. Class C
d. Class D
Answers
Answer:
A
Explanation:
Which tab is used to change the theme of a photo album slide show?
A. Home
B. Design
C. View
Answers
Answer:
b. design. Is your answer
Which statement correctly creates a set named colors that contains the 7 colors in a rainbow?
a. colors = ["red", "orange", "yellow" "green", "blue", "indigo", "violet"]
b. colors = {red, orange, yellow, green, blue, indigo, violet}
c. colors = [red, orange, yellow, green, blue, indigo, violet]
d. colors = {"red", "orange", "yellow", "green", "blue", "indigo", "violet"}
Answers
Answer: d. colors = {"red", "orange", "yellow", "green", "blue", "indigo", "violet"}
Explanation:
We use "{}" to write a set in it.
Also, the names of the colors are strings so we use inverted commas ("") to express them.
So, the set named colors that contains the 7 colors in a rainbow will be:
colors = {"red", "orange", "yellow", "green", "blue", "indigo", "violet"}
Hence, the correct option is d.
John is analyzing an attack against his company in which the attacker found comments embedded in HTML code that provided the clues needed to exploit a software vulnerability. Using the STRIDE model, what type of attack did he uncover?
Answers
Answer:
Information Disclosure
Explanation:
Hello, the fact that the attacker was able to gather information from within the embedded HTML code suggests that the original developer did not properly store information, revealing potential issues or vulnerabilities in his/her design.
The STRIDE model stands for Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.
Using the STRIDE model, one would say this would be a simple information disclosure attack, since the attacker used retrieved information to breach the system.
Cheer.
describe the six clauses in the syntax of an sql retrieval query. show what type of constructs can be specified in each of the six clauses
Answers
Answer:
Answered below
Explanation:
An SQL retrieval query is made up of up to six clauses that must be coded in a specific sequence and they consist of;
1) SELECT - This clause allows you list the columns you want.
2) FROM - This clause indicates the tables you are retrieving information from.
3) WHERE - The where clause indicates a condition.
4) GROUP BY - Let's you group your data into specific and more meaningful information.
5) HAVING - Puts a condition in your group.
6) ORDER BY - Orders your result rows in ascending or descending order.
kyra needs help deciding which colors she should use on her web page. what can she use to help her decide?
Answers
Answer:
What colors does she like most, and what colors best correlate with the subject of the website.
Explanation:
You want to have the color relate to the subject of the website, or just favorites!
Answer:
Storyboarding.
"the time it takes a storage device to locate stored data and make it available for processing is called"
Answers
Answer:
The time is called "Access time"
Explanation:
Basically it is the time taken to retrieve information/data
What is access time?
It is the time taken by a storage device to located information and process the information often times the access time is faster in hard drives when compared to other drives like Optical drives.
Another good analogy or description of access time is the time taken to order a product online and when it is delivered to you in your house
Which button is used to decrease the contrast for a selected image ?
Answers
Answer:
tab button........... ..
In GamePoints' constructor, assign teamWhales with 500 and teamLions with 500. #include using namespace std; class GamePoints { public: GamePoints(); void Start() const; private: int teamDolphins; int teamLions; }; GamePoints::GamePoints() : /* Your code goes here */ { } void GamePoints::Start() const { cout << "Game started: Dolphins " << teamDolphins << " - " << teamLions << " Lions" << endl; } int main() { GamePoints myGame; myGame.Start(); return 0; }
Answers
Answer:
Here is the GamePoints constructor:
GamePoints::GamePoints() :
/* Your code goes here */
{
teamLions = 500;
teamDolphins = 500;
}
Explanation:
Here is the complete program:
#include //to use input output functions
using namespace std; //to identify objects like cin cout
class GamePoints { //class GamePoints
public: GamePoints(); // constructor of GamePoints class
void Start() const; //method of GamePoints class
private: //declare data members of GamePoints class
int teamDolphins; // integer type private member variable of GamePoints
int teamLions; }; // integer type private member variable of GamePoints
GamePoints::GamePoints() //constructor
{ teamLions = (500), teamDolphins= (500); } //assigns 500 to the data members of teamLions and teamDolphins of GamePoints class
void GamePoints::Start() const { //method Start of classs GamePoints
cout << "Game started: Dolphins " << teamDolphins << " - " << teamLions << " Lions" << endl; } //displays the values of teamDolphins and teamLions i.e. 500 assigned by the constructor
int main() //start of main() function
{ GamePoints myGame; // creates an object of GamePoints class
myGame.Start(); //calls Start method of GamePoints class using the object
return 0; }
The output of the program is:
Game started: Dolphins 500 - 500 Lions
Write a statement to create a Google Guava Multimap instance which contains student ids as keys and the associated values are student profiles.
Answers
Answer: provided in the explanation section
Explanation:
Note: take note for indentation so as to prevent error.
So we import com.google.common.collect.Multimap;
import java.util.Collection;
import java.util.Map;
class Main {
public static void main(String[] args) {
// key as studentId and List of Profile as value.
Multimap<String,Profile> multimap = ArrayListMultimap.create();
multimap.put("id1", new ExamProfile("examStudentId1"));
multimap.put("id1", new ELearningProfile("userId1"));
multimap.put("id2", new ExamProfile("examStudentId2"));
multimap.put("id2", new ELearningProfile("userId2"));
// print the data now.
for (Map.Entry<String, Collection<Profile>> entry : multimap.entrySet()) {
String key = entry.getKey();
Collection<String> value = multimap.get(key);
System.out.println(key + ":" + value);
}
}
}
// assuming String as the studentId.
// assuming Profile as the interface. And Profile can multiple implementations that would be
// specific to student.
interface Profile {
}
class ExamProfile implements Profile {
private String examStudentId;
public ExamProfile(String examStudentId) {
this.examStudentId = examStudentId;
}
}
class ELearningProfile implements Profile {
private String userId;
public ELearningProfile(String userId) {
this.userId = userId;
}
}
This code is able to iterate through all entries in the Google Guava multimap and display all the students name in the associated students profile.
Which of the following terms means that the system changes based on
the needs of each learner?
A
Adaptive
B
Mobile-ready
С
Gamified
D
Reactive
Answers
Answer:
A
Explanation:
Give a command that will create a file named listing.dat, in your current (commandsAsst) directory, containing a list of all the files in your fileAsst directory. I need to use redirection, and have tried almost every variation of ls -a < ~/UnixCourse/fileAsst. > listing.dat Primarlily the error I get is that I did not create the 'listing.dat file with ALL of the files located in ../fileAsst/ When I run the same command in another terminal window, then verify with ls -a I can see that I did indeed create the listing.dat file. Can someone tell me what it is I am missing?
Answers
Answer:
Following are the command to this question:
"ls -a ~/UnixCourse/fileAsst > listing.dat"
Explanation:
The above-given code will create a file, that is "listing.dat", and this file will be created in your current directory, which will include the list of all files in the file-asst directory.
In this, Is command is used that uses the directory that is "UnixCourse/fileAsst" and inside this, it will create the "dat" file that is "listing".
5.4.2: While loop: Print 1 to N. Write a while loop that prints from 1 to user_num, increasing by 1 each time. Sample output with input: 4 1 2 3 4
Answers
Answer:
import java.util.Scanner;
class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a number");
int user_num = in.nextInt();
int n = 1;
while(n <= user_num){
System.out.print(n+" ");
n++;
}
}
}
Explanation:
Import Scanner to receive user numberCreate and initalize a new variable (n) to be printed outSet the while condition to while(n <= user_num)Print the value of n after each iteration and increment n by 1Answer:
Written in Python:
i = 1
user_num = int(input()) # Assume positive
while i <= user_num:
print(i)
i += 1
Explanation:
Which of the following are characteristics of algorithms? Choose all that apply. They take a step-by-step approach to performing a task. They’re made up of Instructions posted on a website. They break the task into manageable steps. They identify the tasks that will repeat. They can be written in a computer language to create a program for a computer to follow.
Answer: They take a step-by-step approach to performing a task.
They break the task into manageable steps.
They identify the tasks that will repeat.
They can be written in a computer language to create a program for a computer to follow.
Answers
Answer:
They take a step-by-step approach to performing a task.
They break the task into manageable steps.
They identify the tasks that will repeat.
They can be written in a computer language to create a program for a computer to follow.
Explanation:
An algorithm is a step by step process that needs to be followed in order to solve logical, mathematical, well-defined instructions.
An everyday example of an algorithm is a recipe because it gives you steps to do in order to complete a task.
In computing terms, algorithms can be represented with flow charts, pseudocodes, or high-level languages.
Some of its characteristics include:
They can be written in a computer language to create a program for a computer to follow.They identify the tasks that will repeat. They take a step-by-step approach to performing a task. They break the task into manageable steps.Answer:
So your answer will be
A.
C.
D.
E.
Explanation:
Edge2021
Compute their Cartesian product, AxB of two lists. Each list has no more than 10 numbers.
For example, given the two input lists:
A = [1,2]
B = [3,4]
then the Cartesian product output should be:
AxB = [(1,3),(1,4),(2,3),(2,4)]
Answers
Answer:
The program written in Python is as follows: (See Attachments for source file and output)
def cartesian(AB):
if not AB:
yield ()
else:
for newlist in AB[0]:
for product in cartesian(AB[1:]):
yield (newlist,)+product
A = []
B = []
alist = int(input("Number of items in list A (10 max): "))
while(alist>10):
alist = int(input("Number of items in list A (10 max): "))
blist = int(input("Number of items in list B (10 max): "))
while(blist>10):
blist = int(input("Number of items in list B (10 max): "))
print("Input for List A")
for i in range(alist):
userinput = int(input(": "))
A.append(userinput)
print("Input for List B")
for i in range(blist):
userinput = int(input(": "))
B.append(userinput)
print(list(cartesian([A,B])))
Explanation:
The function to print the Cartesian product is defined here
def cartesian(AB):
This following if condition returns the function while without destroying lists A and B
if not AB:
yield ()
If otherwise
else:
The following iteration generates and prints the Cartesian products
for newlist in AB[0]:
for product in cartesian(AB[1:]):
yield (newlist,)+product
The main method starts here
The next two lines creates two empty lists A and B
A = []
B = []
The next line prompts user for length of list A
alist = int(input("Number of items in list A (10 max): "))
The following iteration ensures that length of list A is no more than 10
while(alist>10):
alist = int(input("Number of items in list A (10 max): "))
The next line prompts user for length of list B
blist = int(input("Number of items in list B (10 max): "))
The following iteration ensures that length of list B is no more than 10
while(blist>10):
blist = int(input("Number of items in list B (10 max): "))
The next 4 lines prompts user for input and gets the input for List A
print("Input for List A")
for i in range(alist):
userinput = int(input(": "))
A.append(userinput)
The next 4 lines prompts user for input and gets the input for List B
print("Input for List B")
for i in range(blist):
userinput = int(input(": "))
B.append(userinput)
This line calls the function to print the Cartesian product
print(list(cartesian([A,B])))
When an object reference is passed as a parameter to a method, modifying the members of that object from inside the method will result in a change to that object as seen from the client.
a. True
b. False
Answers
Answer:
A) True
Explanation:
Objects are known as reference types, meaning that they are always accessed by references, not copied. When a method is called, passing an object to it, Java passes a reference of that object to the method and when that reference is modified, the changes can be seen in the object itself. Therefore a mutable object can be mutated anywhere- either from where it is created or by a method it is passed to. Hence the need to always use privacy modifier keywords such as public, private or protected, to determine the exposure of class properties and methods.
External network security threats can include management failure to support organization-wide security awareness, inadequate security policies, and unenforced security procedures.
A. True
B. False
Answers
Answer:
The answer is "Option B".
Explanation:
In external networking, it establishes the informal links beyond the size of the firm, which supports its career, and these networks may be used for help, invaluable guidance.
This system would be a different point of view to provide the privacy protection for the system connectivity, and in the internal system protects its system protects all its data, that's why it is false.
Given two strings s and t of equal length, the Hamming distance between s and t, denoted dH(s,t), is the number of corresponding symbols that differ in s and t.
Given: Two DNA strings s and t of equal length (not exceeding 1 kbp).
Return: The Hamming distance dH(s,t).
Sample Dataset
GAGCCTACTAACGGGAT CATCGTAATGACGGCCT
Sample Output
7
Answers
Answer:
computer and technologycomputer and technology
Explanation:
computer and technologycomputer and technology
Home communication involves controlling systems such as heating, cooling, and security.
a. True
b. False
Answers
Answer:
A. True
Explanation:
Home communications involves automating home. It includes controlling the air-con,water heater, webcam, etc. A
Which of the following code segments will display all of the lines in the file object named infile, assuming that it has successfully been opened for reading?
a. while line in infile :
print(line)
b. while infile in line :
print(line)
c.for infile in line :
print(line)
d. for line in infile :
print(line)
Answers
Answer:
d.
for line in infile :
print(line)
Explanation:
for loop is used to iterate through the each line of the file using line variable. The file is accessed using the object infile. For example if the file name is "file.txt" and it is opened in read mode. It contains the following lines:
hi there friend
how are you
what are you doing
Then the above given chunk of code gives the following output
hi there friend
how are you
what are you doing
At each iteration each line of the the file is printed on the output screen. The print() method is used to display these lines in output.
A _____ area network is one step up from a _____ area network in geographical range.
Answers
Answer:
A metropolitan area network is one step up from a local area network in geographical range.
Explanation:
A metropolitan area network is one step up from a local area network in geographical range.
A network is a group of devices connected together for communication. Networks can be classified according to the area they cover, A metropolitan area network is smaller than a wide area network but larger than a local area network.
A local area network consist of computers network in a single place. A group of LAN network form a metropolitan network
A metropolitan network is a network across a city or small region. A group of MAN form a wide area network.
Should behavioral tracking be legal? Why or why not?
Answers
Answer:
I honestly don't see very many reasons on why it is bad because it's just showing you ads that you might actually want to see instead of some random ad about cats whenever you own a goldfish, but I feel like websites should ask for permission before they do it.
Answer:
Behavioral Tracking should be legal. I don't see very many reasons as too why behavioral tracking is bad being shown as ads that might actually be useful, but websites should ask for permission before they do it.
Would two bits be enough to assign a unique binary number to each vowel in the English language? Explain.
Answers
Answer:
No.
Explanation:
Since there are 5 vowels, you'd need at least 3 bits to number them. 2 bits give you 2²=4 possibilities, which is 1 short. 3 bits give you 2³=8 possibilities, which fits 5 easily.
The term "bit" means binary digit, and it is used to represent data in a computer system.
The number of character an n-bit computer can hold is [tex]2^n[/tex]
So, a 2-bit computer can hold a maximum of:
[tex]Max = 2^2[/tex]
[tex]Max = 4[/tex]
i.e. A 2-bit computer can hold a maximum of 4 characters.
The English language vowel are 5 (i.e. letters a, e, i, o and u).
5 is greater than the maximum number of characters the 2-bit computer can hold (i.e. 5 > 4)
Hence, two bits will not be enough to hold each vowel in the English language.
Read more about binary digits at:
brainly.com/question/9480337
"The ______ of an operational system that supports an organization includes policies, requirements, and conditional statements that govern how the system works."
Answers
Answer:
decision logic
Explanation:. The decision logic of an operational system that supports an organization includes policies, requirements, and conditional statements that govern how the system works. These systems includes the following :
a) Order processing,
b)Pricing
c) Inventory control, and
d) Customer relationship management. And the traditional means of modifying the decision logic of information systems involves heavy interaction between business users and information technology (IT) analysts.
What are the advantages and disadvantages of solving a problem that can be broken down into repetitive tasks with recursion as opposed to a loop? Explain your answer.
Answers
Answer:
Answered below
Explanation:
Recursion refers to the process of a function calling itself within its own definition. It calls itself repeatedly until a base condition is met and the loop breaks.
The advantages of recursion over loops include;
A) Recursion reduces time complexity.
B) Recursion is better at tree traversal and graphs.
C) Recursion reduces the time needed to write and debug code and also adds clarity to code.
Disadvantages of recursion include;
A) Recursion uses more memory because each function call remains in stack until the base case is met.
B) Recursion can be slow.
C) Recursion
What is the output from the following code? MapInterface m; m = new ArrayListMap(); m.put('D', "dog"); m.put('P', "pig"); m.put('C', "cat"); m.put('P', "pet"); System.out.println(m.get('D')); System.out.println(m.get('E')); System.out.println(m.get('P'));
Answers
Answer: dog
null
pet
Explanation:
taking into condiserations the various animals and their tag given to them;
OUTPUT :
dog
null
pet
PROOF:
Where the Initially map : {}
after map.put('D', "dog"), map : {'D':"dog"}
after map.put('P', "pig"), map : {'D':"dog", 'P':"pig"}
after map.put('C', "cat"), map : {'D':"dog", 'P':"pig", 'C':"cat"}
after map.put('P', "pet"), map : {'D':"dog", 'P':"pet", 'C':"cat"}, what this does is replace the value of P with "pet"
map.get('D') prints dog.
map.get('E') prints null, key is not present
map.get('P') prints pet
cheers I hope this helped !!
Where can you submit a bug report?
Answers
Answer:
most developers incorporate a report a bug feature, if you cannot find it search online or go to the website on the software.
Explanation:
what are some consequences of internet addiction
Answers
Answer:
1. week eyesight
2. weak brain power
3. loss of concentration...
hope it helps u
Which dashboard does the Control Room administrator need to reference to get a graphical representation of Events Distribution by Activity Type?
a) Bots
b) Workload
c) Insights
d) Audit
Answers
Write a function called count_occurrences that takes two strings. The second string should only be one character long. The function should return how many times the second string occurs in the first string.
Answers
Answer:
Here is the Python function:
def count_occurrences (string1 , string2): # method that takes two strings as parameter and returns how many times second string occurs in first
count = 0 #counts number of occurrence of string2 in string1
for word in string1: #iterates through each word of the string1
for character in word: #iterates through each character of each word in string1
if character == string2: # checks if the character in string1 is equal to the character of string2
count = count + 1 #adds 1 to the count of string2 in string1
return count #returns number of times the string2 occurs in string1
#in order to check the working of the function add the following lines to the code:
first_str = input("Enter the first string: ") #prompts user to enter first string
second_str = input("Enter the second string (one character long): ") #prompts user to enter second string which should be one character long
occurrence = count_occurrences(first_str,second_str) #calls count_occurrences method by passing both strings to it
print(second_str,"occurs",occurrence,"times in",first_str) #prints how many times the second_str occurs in the first_str on output screen
Explanation:
The program is well explained in the comments added to each statement of the above code. I will explain the program with an example:
Suppose
string1 = "hello world"
string2 = 'l'
So the method count_occurrences() should return how many times l occurs in hello world.
count is used to count the number of occurrences of l in hello world. It is initialized to 0.
The first loop iterates through each word of string1. The first word of string1 is "hello"
The second loop iterates through each character/letter of each word. So the first letter of "hello" word is 'h'.
The if condition if character == string2: checks if the character is equal to string2 i.e. l.
character = "h"
string2 = "l"
The are not equal so the program moves to the next character of word hello which is e. The if condition again evaluates to false because e is not equal to l. So the program moves to the next character of word hello which is l.
This time the if condition evaluates to true because
character = "l"
string2 = "l"
character == string2
l == l
So the if part is executed which has the following statement:
count = count + 1
So the count is added to 1. count was 0 previously. Now
count = 1
Next the program moves to the next character of word hello which is l. This time the if condition evaluates to true because the character l matches with string2. So count is again incremented to 1. count = 2.
Next the program moves to the next character of word hello which is o. The if condition evaluates to false as o does not match with string2 i.e. l. So the count remains 2.
Next the first loop moves to the next word of the string1 = "world". The inner (second) for loop iterates through each character of "world" from "w" to "d" and checks if any character is equal to string2. Only one character is equal to string2 in "world". So count is incremented to 1. Hence count = 3
After the loop ends the statement return count returns the number of times string2 occurs in the string1. So the output is:
l occurs 3 times in hello world
Answer:
def count_occurrences(sentence, thing_to_count):
times = 0
for word in sentence:
for letter in word:
if letter == thing_to_count: times += 1
return times
Explanation:
I got 100%