Where creating classes, we prefer to hide our data from the outside world in order t ensure encapsulation. To help achieve this we almost always declare our instance variables (or fields) to be ? Obscured Private O Internal Restricted

Where creating classes, we prefer to hide our data from the outside world in order t ensure encapsulation. To help achieve this we almost always declare our instance variables (or fields) to be ? Obscured Private O Internal Restricted

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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Jave assignment: Create a class called Player that has the following attributes: Player Health - Integer Intelligence - Integer Dexterity - Integer Strength - Integer Stamina - Integer Player() Player(Health, Intelligence, Dexterity, Strength, Stamina) getHealth() - Integer setHealth(Integer) - Void getIntelligence() - Integer setIntelligence(Integer) - Void getDexterity() - Integer setDexterity(Integer) - Void getStrength() - Integer setStrength(Integer) - Void getStamina() - Integer setStamina(Integer) - Void toString() - String compareTo(Player) - Integer equals(Player) - Boolean Notes: All attributes should not be allowed to be set below 0.
A class called Location. A Location will have two attributes: city state A Location will have these methods: default constructor overloaded constructor copy constructor setters and getters for all attributes get State initials – get the abbreviation for the state. You may use a utility or a case structure. (FYI, you don’t have to put all 50 states in, at least have what you have in the file. Pick a few and test. equals() toString() An EntertainmentPlace class. An EntertainmentPlace will have these attributes: name type (Example house, amusement park, corn maze, escape room) price Location - this will be of the Location location (feel free to change the reference name) An EntertainmentPlace will have these methods: default constructor overloaded constructor that allows name, type, price and a Location object to be passed in overloaded constructor that allows name, price Location copy constructor all getters all setters equals() copy() method toString() - this will include…
Define a class Student to create Student Objects. The class defines two variables for its objects: name (String ) and average (double). The class provides a constructor with arguments and includes the following object methods to do the following: - public void print() : prints the Student data - public void setAverage(double newAvergae): sets the student average with a new value. Define a class StudentTest In the main method, create three student objects (Ali, Rami, Khalid) with initial average 60 for each one. - Call the setAverage method on each created student to change their average with a randomly value (hint: use Math.random( ) method to generate average value in range [0..100]). - Print the name of the student who's the maximum average. hint: you should compare between the Student objects according to their average.
For this portion of the assignment you will need to create the Employee class * based on the instructions in the API and have implemented the Equals method for that class. * * There is one parameter being passed as to this method that you will use as part of your solution:* An Employee object reference with the identifier testEmployee* * 1) Instantiate an instance of the Employee class using the default constructor and * assign it to an object reference with the identifier defaultEmployee* * 2) Instantiate an instance of the Employee class using the alternate constructor, * passing the following arguments:* name: "Keanu Reeves"* ID: 10010* salary: 78000.00* Assign the instance to an object reference with the identifier keanuEmployee* * 3) Declare a variable of type Employee with the identifier excellentEmployee and assign it * a reference to the same object that is being referenced by the keanuEmployee object reference. * 4) Construct a selection statement that tests if testEmployee is…
Convert UML class diagrams to Java code You are required to convert the UML class diagrams shown below into Java code. Cat numberOfTeeth: int lengthofTail : int name : String ownerName : String + Pet (name:String, ownerName: String) + getName(): String + getOwner Name () : String Pet + Cat (name: String, ownerName: String, numberOfTeeth:int, lengthofTail:int) + getNumberOfTeeth (): int + getLengthofTail (): int Budgie colourOfFeathers: String + Budgie (name: String, ownerName: String, colourOfFeathers: String) + getColourOfFeathers (): String
JAVA QUESTION REQUIRES SEPARATE CLASSES, CANNOT BE WRITTEN IN ONE MAIN METHOD E.G. ACCOUNT SECTION WRITTEN IN ACCOUNT CLASS, CUSTOMER SECTION WRITTEN IN CUSTOMER CLASS ETC. Phase 2 In this phase you’ll be writing code within the methods of your classes to make the tests pass. Account Each account should have a constant, unique id. Id numbers should start from 1000 and increment by 5. The ACCOUNT_ID attribute should be initialised when the account object is created. The id should be generated internally within the class, it should not be passed in as an argument. The deposit method should increase the balance by the value passed in as an argument. The withdraw method should reduce the balance by the value passed in as an argument. It should return the value of the argument The account should be able to go overdrawn The correctBalance method should change the balance to match the value passed in as an argument. Testing your code for Account Run TestAccountInitialisation to check…
Quiz • Create a car class • Each car will have name, price, and km, • Create RentaCar class RentaCar must contains all cars, • In main Class, • Create a RentaCar object, and put 2 cars in it. Print number of cars in RantaCar object Print total km info
Create a class Divide with the following fields, constructors and methods:Fields: create two double fields called numerator and denominator Constructors:- a no-argument constructor- a constructor with two parameters Methods:- write a getter to return the result of numerator divided by denominator- Create 4 overloaded calculate methods. Note: Division would be numerator divided by denominator 1. method receives two double parameters and returns the result of the division as double 2. method receives two integer parameters and returns the result of the division as double 3. method receives one integer parameter and another as double parameter and returns the result of the division as int 4. method receives two String parameters and returns the result of the division as int Create a demo class to test the two constructors, all the methods and display the returned values. You can hard code the parameters values when calling the constructor and the methods.
1. Create the main method using pythone to test the classes. #Create the class personTypefrom matplotlib.pyplot import phase_spectrum class personType: #create the class constructor def __init__(self,fName,lName): #Initialize the data members self.fName = fName self.lName = lName #Method to access def getFName(self): return self.fName def getLName(self): return self.lName #Method to manipulate the data members def setFName(self,fName): self.fName = fName def setLName(self,lName): self.lName = lName #Create the class Doctor Type inherit from personTypeclass doctorType(personType): #Create the constructor for the doctorType class def __init__(self, fName, lName,speciality="unknown"): super().__init__(fName, lName) self.speciality = speciality #Methods to access def getSpeciality(self): return self.speciality #Methods to manipulate def setSpeciality(self,spc):…
When the inheritance is private, then the private members/methods of parent class are in the child class. Select one: a.public b.protected c.inaccessible d.private
If you assign a new instance of a subclass object to a super-class variable without casting, what will happen when you compile your code? A warning will appear Ob A ClassCastException will occur O c. A compile error will occur Od Will be fine
Working With Java Classes Define a Java class as described below. All variables should be declared as private and all methods as public. Save the class definition in a file with an appropriate filename. Class Name: Family Instance Variables: numDependents - int (Fields) annualIncome - double Instance Methods: A constructor that accepts no arguments and sets the number of dependents field to 1 and the annual income field to zero. rate). A constructor that accepts 1 argument, an annual income amount and sets the number of dependents to1. A constructor that accept 2 arguments representing an initial value for each of the fields. Accessor/Getter Methods: (Use appropriate method names) dependents() A function to return the number of dependents. income() A function to return the annual income amount. Mutator/Setter Methods: (Use appropriate method names) dependents() A function that has an integer formal argument that is assigned to the number of dependents field. income() A function that…