Match the following:A. privateA class that contains no methods (other than constructors) that change any of the data in its objectImmutable classВ.modifier means that there are no restrictions on where an instance variable or method can be usedc method signatureshiding implementation details is done by marking data and methods asD PublicWhen we call a method in Java using class type parametersE constructor methodsmethod nameOverloading is achieved when two or more methods in the same class have the sameF.Call-by-referenceG.Accessor methodsН.

Left side statements have been marked from 1-5 and have been paired with values on the right hand…

Match the following: private A. A class that contains no methods (other than constructors) that change any of the data in its object Immutable class B. modifier means that there are no restrictions on where an instance variable or method can be used method signatures C. hiding implementation details is done by marking data and methods as Public D. constructor methods When we call a method in Java using class type parameters E. v Overloading is achieved when two or more methods in the same class have the same F method name G. Call-by-reference Accessor methods Н.

Match the following: private A. A class that contains no methods (other than constructors) that change any of the data in its object Immutable class B. modifier means that there are no restrictions on where an instance variable or method can be used method signatures C. hiding implementation details is done by marking data and methods as Public D. constructor methods When we call a method in Java using class type parameters E. v Overloading is achieved when two or more methods in the same class have the same F method name G. Call-by-reference Accessor methods Н.

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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Create a java program with the ff requirements:
Language: Python First, define a Product class that includes all the information about a single product. a. You will need a constructor to initialize new instances. Objects of this class should have three instance variables: name, price, and quantity in-stock. b. Add a method to your class that takes an integer count and determines whether that many of the product are in stock. c. Add another method that takes a count and returns the total cost of that many of the product. d. Finally, add a method that takes a count and removes that many of the product from the stock. Next, replace the three product lists with a single list of Product instances. Modify the rest of the code to correctly use the attributes and methods of the Products in the list. product_names = ["Ultrasonic range finder", "Servo motor", "Servo controller", "Microcontroller Board", "Laser range finder", "Lithium polymer battery" ]product_prices = [2.50, 14.99, 44.95, 34.95, 149.99,…
Complete the partial declaration of Class Car: public class Car { // declare three private instance variables: color, speed, model // define a constructor with two parameters: c , m which will assign values to color and model. //define set and get method for all instance variables //define a method named calspeed( ) with int return type, the method will increase the speed by 50 mile per hour. } Complete the application below. public class CarApp { public static void main() { string color = blue; string model = C2021;i int speed = 80; // declare necessary object matching to the constructor definition // display the color and model on the screen // call the calspeed( ) method and display the new speed after calculation. } }
a) Design and implement a Comparable Java class to represent a Rational number such as3/2. Your class will have the following methods as well as any other methods necessary (setters, getters, etc.). - A constructor that takes all parameters (numerator, denominator), - A function that returns the number of existing Rational objects, - Override the tostring method, - Methods for adding and multiplying Rational objects, - Your methods will throw exceptions if there are problems. b) Write another class to test your Rational class including the exceptions.
accessor methods for each of the instance variables A local taxi company has decided to expand and not only have taxis that go on land (i.e., cars), but also taxis that go on water (i.e., boats). You have been asked to design a number of classes to represent the various taxi fares (trips with passengers) and their various fee structures, by using inheritance in Python. a computeCharges method that returns the total charges for the cab fare, using the instance variables and the defined constants (i.e., kms multiplied by the cost per km, plus minutes multiplied by the cost per minute) Please read all parts of this question below before starting the question. Include the completed code for all parts of this question in a file called taxi_company.py- NOTE: To implement encapsulation, all of the instance variables/fields should be considered private. Question 3 (a) Design and implement a class called TaxiFare that includes the following instance variable(s) and method(s) for an object.…
Question 6 Match the following: A constructor methods A class that contains no methods (other than constructors) that change any of the data in its object method name B. v modifier means that there are no restrictions on where an instance variable or method can be used c Accessor methods y hiding implementation details is done by marking data and methods as D Call-by-reference When we call a method in Java using class type parameters E Immutable class v Overloading is achieved when two or more methods in the same class have the same E Public G, private H method signatures
private int b; public int method3() { return b; } // in another class an object of the first class was introduced and inside the second class : float y = tester.method3(); are there any errors ? and explain please
Please give me correct solution.
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.
Answer with True or False for the following. Explain your answers.-It is legal to write a method in a class which overloads another method declared in the same.-It is legal to write a method in a superclass which overrides a method declared in a sub-class.
4. Complete the following class to implement all the methods in the class: public class Person { String name; int birthYear; public Person () { name = "unknown"; birthYear = 2000; } public Person (String givenName, int yearofBirth) { //put your implementation for this method } public String getName () { //put your implementation for this method } public String changeName (String newName) { //put your implementation for this method } public int getAgeInYears (int currentYear) { //put your implementation for this method } public static void main (String[] args) { //Create a new Person object called personl; name is Ahmed, and his birth year 1995 // Create a new Person object called person2; name is Rami, and his birth year 2000 //print the age of the first person } }
Define a new "Exam" class that manages the exam name (string) and its score (integer). For example, an exam can have - "Midterm Exam", 100 - "Final Exam", 50 The class must not provide the default constructor. It must require the exam name and score in order to initialize the Exam object. The class must provide only the following methods (no more and no less): - isPerfect method that returns true if the score is exactly 100 and false otherwise. - isPassing method that returns true if the score is equal or greater than 70 and false otherwise. - toString method must return all the exam information including the result of the exam as a string in the following format: EXAM(<name>) SCORE(<score>) RESULT(Pass/Fail) such asEXAM(Midterm Exam) SCORE(100) RESULT(Pass) EXAM(Final Exam) SCORE(50) RESULT(Fail) "Pass" means the score is greater or equal 70. "Fail" is whenever the score is below 70. - isGreater method that compares with another Exam object and return true if the score…