1. Refactor the following code for encapsulation (information hiding). (5 points) FILL IN BLANKS on this side: For this incorrect class code on the left side: (provide answer on right by public class School refactoring) { public class School { String name; public String name; String id; pubic String id; String getName(){ String getName(){ return name; return name; } } String getld(){ return id; String getld({ } return id; } } }

1. Refactor the following code for encapsulation (information hiding). (5 points) FILL IN BLANKS on this side: For this incorrect class code on the left side: (provide answer on right by public class School refactoring) { public class School { String name; public String name; String id; pubic String id; String getName(){ String getName(){ return name; return name; } } String getld(){ return id; String getld({ } return id; } } }

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

Term by CodeChum Admin (JAVA CODE) Construct a class called Term. It is going to represent a term in polynomial expression. It has an integer coefficient and an exponent. In this case, there is only 1 independent variable that is 'x'. There should be two operations for the Term: public Term times(Term t) - multiplies the term with another term and returns the result public String toString() - prints the coefficient followed by "x^" and appended by the exponent. But with the following additional rules: if the coefficient is 1, then it is not printed. if the exponent is 1, then it is not printed ( the caret is not printed as well) if the exponent is 0, then only the coefficient is printed. Input The first line contains the coefficient and the exponent of the first term. The second line contains the coefficient and the exponent of the second term. 1·1 4·3 Output Display the resulting product for each of the test case. 4x^4
# Coding - Simulate a robot Write a program that simulates the movements of a robot. The robot can have three possible movements: turn right turn left advance The robot is placed on a hypothetical infinite grid, facing a particular direction (north, east, south, or west) at a set of `{x,y}` coordinates,e.g., `{3,8}`, with coordinates increasing to the north and east. Create a Class `Robot` that contains a method `execute` which given a number of instructions will calculate the robot's new position, and the the direction in which it is pointing. ## Example The letter-string "RAALAL" means: Turn right Advance twice Turn left Advance once Turn left yet again Say a robot starts at `{7, 3}` facing north. Running this stream of instructions should leave it at `{9, 4}` facing west. ## Inputs and Outputs The argument of the `execute` is `string` in the format `X Y BEARING COMMANDS`. The method should return a one-liner `string` in the format `X Y BEARING`. In the…
Q5: Correct the following code fragment and what will be the final results of the variable a and b class A {protected int x1,y1,z; public: A(a, b,c):x1(a+2),y1 (b-1),z(c+2) { for(i=0; i<5;i++) x1++;y1++;z++;}}; class B {protected: int x,y; public: B(a,b):x(a+1),y(b+2) { for(i=0; i<5;i++) x+=2; y+=1;}}; class D:public B, virtual public A { private: int a,b; public: D(k,m,n): a(k+n), B(k,m),b(n+2),A(k,m,n) { a=a+1;b=b+1;}); int main() {Dob(4,2,5);)
**please see question attached** (previous program below) #include <iostream>using namespace std;class House{//instance variablesprivate:string location;int price; public://constructorsHouse(){location = "TBD";price = 0;}House(string location,int price){this->location = location;this->price = price;}//Get and set methodsvoid setLocation(string location){this->location = location;}string getLocation(){return location;}void setPrice(int price){this->price = price;}int getPrice(){return price;} };//member functionvoid output(House a){cout <<"Location: " << a.getLocation()<<endl;cout <<"Price: "<<a.getPrice()<<endl;}int main(){House a("1234 qcc st, Bayside, NY",1000000);output(a);House b;output(b); return 0;}
LocalResource(String date, String sector)- Actions of the constructor include accepting a date in the format “dd/mm/yyyy”, initializing the base class, storing the sector and storing an id as a consecutively increasing integer. Note that the constructor must ensure that the date of birth information is recorded. b. getId():Integer - returns the ID of the current instance of LocalResource c. getSector():String – returns the sector associated with the current instance of localResource d. getTRN():String – returns the trn number of the current instance of LocalResource. The process used to determine the TRN is to add the id to the number 100000000 and then returning the string equivalent. e. Update the NineToFiver class to ensure it properly extends the LocalResource class f. In method getContact() of NineToFiver, remove the comments so that the method returns "Local Employee #"+and the id of the contact. Write a concrete class LocalConsultant that extends LocalResource, and implements…
JAVA Language Caesar Shift Question: Modify the Caesar class so that it will allow various sized shifts to be used, instead of just a shift of size 3. (Hint: Use an instance variable in the Caesar class to represent the shift, add a constructor to set it, and change the encode method to use it.) import java.util.*; public class TestCipher { public static void main(String[] args) { int shift = 7; Caesar caesar = new Caesar(); String text = "hello world"; String encryptTxt = caesar.encrypt(text); System.out.println(text + " encrypted with shift " + shift + " is " + encryptTxt); } } abstract class Cipher { public String encrypt(String s) { StringBuffer result = new StringBuffer(""); // Use a StringBuffer StringTokenizer words = new StringTokenizer(s); // Break s into its words while (words.hasMoreTokens()) { // For each word in s…
Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works. Next add the following public methods to the Address class and test them from main as you go: Write getters and…
Talking: Heba Abde QUESTION 1: Implement class myTime, this class should: 1) Encapsulate information about the hours (integer), minutes (integer), seconds (integer), AM PM (String) 2) Forbid invalid times, where the following criteria should be considered: - hours are in the range [1 – 12], default is 12. - minutes are in the range [0 – 59], default is 0. - seconds are in the range [0-59], default is 0. - AM PM can only be either “AM" or "PM", default is "AM" If any forbidden value entered, you should set the value to default value. 3) Two different constructors (default and parameterized) 4) A print function that will print the time as (hours : minutes : seconds PM/AM) Example: 02:45:30 PM 6) implement function ticktack, which adds one to the seconds, notice that if seconds is 59 and you add one, it should become 0 and the minutes should be incremented by one, also, if after incrementing minutes by one it becomes 60, it should be set to 0 and hours must be incremented by 1, if after…
Define the following terms with the help of examples: Encapsulation Constructor.
7- Every class member is by default. (public, private, not public nor private) 8- Create an instance of the following class and call its methods. class Exam{ int grade; public: void seta (int b) (grade=b; } int geta () {return grade; } }; 9- When the word const is put before the variable definition, what does that mean? 10- How to concatenate two strings in C++ language? C++
mplement “SoftwareEngineer” and “CheifEngineer” class derived from “Employee” class with necessary properties so that the expected output is generated. Do not change any given code. # Write your codes here.# Do not change the following lines of code.sw1 = SoftwareEngineer("Bob","Software Engineer",40,1200)print('1.------------------------------------')sw1.calculateWeeklyIncome()print('2.------------------------------------')print(sw1)print('3.------------------------------------')sw2 = SoftwareEngineer("Carol","Software Engineer",45,1200,5)print('4.------------------------------------')sw2.calculateWeeklyIncome()print('5.------------------------------------')print(sw2)print('6.------------------------------------')print(Employee.employeeInfo)print('7.====================================')ce1 = ChiefEngineer("John","Chief…
Problem (Online Address Book): Using classes, design an online address book to keep track of the names, addresses, phone numbers, and dates of birth of family members, close friends, and certain business associates. Define a class addressType that can store a street address, city, state, and ZIP code. Use the appropriate functions to print and store the address. Also, use constructors to automatically initialize the member variables. Define a class extPersonType using the class personType with following members and methods: firstname, lastname, and accessors and mutators, print to display, and constructors. Define a class dateType for month, day and year as members with its accessors, mutators, and constructors) Design a class addressType. Add a member variable to this class to classify the person as a family member, friend, or business associate. Also, add a member variable to store the phone number. Add (or override) the functions to print and store the appropriate information.…