MailingsReviewViewell me what you want tHelpDesignLayoutReferencesimes New Romar -12A AAa vab、三BIU abs X, x AParagraphFontObjective(s):You are required to write a program in JAVA based on the problem description given. Read theproblem description and examine the sample of output; then study the program design given.Using the problem-solving tips as a guide, write a complete program with necessary usefulcomment for good documentation. Compile and execute the program.Learning Outcome(s):1. To introduce business problem specification/requirement and translates into JAVA codes.2. To practice writing simple application of deploying object-oriented programming concept usingJAVA.DESCRIPTION OF PROBLEM:Write a program contained a class Student which has firstName, lastName, mark, grade. Theclass allows object instance to assign firstName, lastName and mark from input user andperform and assign grade based on mark's criteria displayed below.SAMPLE OF OUTPUT:Enter student details:First Name : JohnLast Name: KendallMarks: 96First NameLast NameGradeJohnKendallA+Another student? (Yes - 1, No - 0)ia 1Enter student details:First Name: MaryLast Name: KendallMarks: 76FirstNameLast NameGradeMaryKendallC+Another student? (Yes - 1, No - 0):> 0Total student : 2Exit..

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Answered: Write a program contained a class…

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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A single class can have many instances of that class it’s true or false
A class called Book is designed to model a book written by one author. It contains:• Four private instance variables: name (String), author (of the class Author you have justcreated, assume that a book has one and only one author), price (double), and qty (int);• An __init__() to initialize the name, author, price, and qty with the given values;• Getters/Setters: getName(), getAuthor(), getPrice(), setPrice(), getQty(), setQty().• __str__() method that returns printable string of that object with the following format:"Book[name=?,Author[name=?,email=?,gender=?],price=?,qty=?".You should reuse Author’s __str__().Write the Book class (which uses the Author class written earlier). Also write a test drivercodeto test all the methods in the class Book. Take Note that you have to construct an instanceof Author before you can construct an instance of Book. E.g.,ahTeck = Author("Tan Ah Teck", "ahteck@nowhere.com", 'm') # Test the constructorprint(ahTeck) # Test __str__()dummyBook = Book("Java…
Complete the Appointment class. The class should have the following instance variables, constructors) and instance methods: 1. A properlv encapsulated String instance variable named personName 2. A properly encapsulated String instance variable named day. 3. A properly encapsulated double instance variable named duration 4. A default(no-arg) constructor that sets the per sonName instance variable to "Your Boss", day instance variable to "Monday" and duration instance variable to 1.5. 1. An overloaded constructor that takes two String parameters and one double parameter and sets the instance variables to the values passed in. 2. A getter and setter method for each instance variable. .A method named printAppointment, the method returns a String which contains the concatenation of the instance variables as shown in the sample output
Written in Python It should have an init method that takes two values and uses them to initialize the data members. It should have a get_age method. Docstrings for modules, functions, classes, and methods
a- Write a class definition for Student containing the following instance variables and methods: b- Create an object of this class c- Call the method to calculate and set average_test d- Print average test self. name self. test1 self. test2 self. average test A constructor to accept name, test1 and test2 as parameters and assign them to instant variables. A method to calculate and set averave test (each test worth 50%) A method to get average_test
question 9 and 10
Set course_student's last_name to Smith, age_years to 20, and id_num to 9999.Sample output for the given program:Name: Smith, Age: 20, ID: 9999 class PersonData: def __init__(self): self.last_name = '' self.age_years = 0 def set_name(self, user_name): self.last_name = user_name def set_age(self, num_years): self.age_years = num_years # Other parts omitted def print_all(self): output_str = 'Name: ' + self.last_name + ', Age: ' + str(self.age_years) return output_str
5. CODE IN PYTHON Create a BankAccount class which has an __init__ method which accepts an account name and starting balance to store as instance fields. The class should also have a method to deposit money, a method to withdraw money, and a method called "get_balance" which returns a string of the format "{account_name} has a balance of {balance}" (do not print this out from within the class, just return the string). In the same file, create an instance of the BankAccount class with a hardcoded name and starting balance. Deposit any amount to the account and withdraw any amount from the account (both can be hardcoded) and then print the result of calling the get_balance method on the instance.
#Array question.
While moving data from one server to another, what potential dangers could arise?
Write a class Runner having three private data members (distance, minutes, seconds) The class has A constructor which having no parameter – for setting values to zero or null.Getters/setters for data members.Write a function show() which displays the“The player covered “+distance+ “ in “ +minutes +” minutes , and “ + seconds+” seconds”; Write test Application that demonstrates the above class by calling all the methods, creating a Create 3 Runner objects, input values and then display the record of winner.
The surface area and volume of a sphere are given by following formulas, where R is the radius of the sphere andn is a constant. area = 4nR? 4 volume =R° 3 Write a complete Object-Oriented Program to solve the surface area and volume of Sphere. The class name in Sphere. The data members of the program are private data members. The surface area and volume should be the member function of the created class. The class also should have mutator, accessor and default constructor. The input is from the user where you should ask 5 inputs of radius. Use an array as the object. Then your program should be able to display the results and write it in a file name "sphere.txt". The sample output is as follow. Please input the radius of 5 different Sphere in [m] 12.1 29.04 5.145 30 9.48

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