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- Java - Access Specifiers Create a class named Circle that has attributes radius, area, and circumference and make the attributes private. Make a public method that sets the radius and a method that prints all attributes. Ask the user input for radius. Note: Use the PI from the math functions Inputs A line containing an integer 10 Sample Output Radius: 20 Area: 1256.64 Circumference: 125.66Home Task: 1. Implement the following class and test its methods: - numerator: int - denominator: int Fraction + Fraction(numerator: Int, denominator: int) + getNumerator(): int + getDenominator(): int + setNumerator(numerator: Int): void + setDenominator(denominator: Int): void + to String(): String + add(fraction: Fraction); void + sub(fraction: Fraction); void + multiplication (fraction: Fraction); void + division(fraction: Fraction): voldObject Oriented Programming: 213COMP, 214COMP (Feb-2022) Assignment- I [10 marks] Academic honesty: O Only pdf file accepted & student ID, will be your upload file. O Student who submit copied work will obtain a mark of zero. O Late work or attach file by email message not allowed. Q1: Write the signature for a method that has one parameter of type String, and does not return a value. Q2: Write the signature for a method that has two parameters, both of type Student, and returns an int value. Q3: Write the constructor's headers of the followings? new Student (202101156, “Ahmed"); new Address(51, "jazan university","CS&IT" ); new Grade(true, 505235600, 4.5); Q4: a) Write a class Student that define the following information: name, stid , age. b) Explain a mutators (setters) and accessors(getters) methods for each attributes(fields). c) Add three constructors: • with empty constructor. one parameter constructor (name of student) two parameters constructor (name and stid) d) Create two…
- All methods in this class are public. -int ID -name -status (int ID, String name, String status) setiD (int ID) setName (String name) setStatus (String status) getName) string getStatuso toString0 Pick one: True/FalseEclipise Exercise 1: Write a Java application that simulates a test. The test contains at least five questions about first three lectures of this course. Each question should be a multiple-choice question with 4 options. Design a Test class. Use programmer-defined methods to implement your solution. For example: create a method to simulate the questions – simulateQuestion create a method to check the answer – checkAnswer create a method to display a random message for the user – generateMessage create a method to interact with the user - inputAnswer Display the questions using methods of JOptionPane class. Use a loop to show all the questions. For each question: If the user finds the right answer, display a random congratulatory message (“Excellent!”,”Good!”,”Keep up the good work!”, or “Nice work!”). If the user responds incorrectly, display an appropriate message and the correct answer (“No. Please try again”, “Wrong. Try once more”, “Don't give up!”, “No. Keep…The class's methods are all accessible to the public. Characteristics: -int ID -name -status (int ID, String name, String status) setiD (int ID) (int ID) setName (String name) (String name) setStatus (String status, String getName), string getStatuso, toString0 Choose one True/False
- Complete the convert() method that casts the parameter from a double to an integer and returns the res Note that the main() method prints out the returned value of the convert() method. Ex: If the double value is 19.9, then the output is: 19 Ex: If the double value is 3.1, then the output is: 3 512334.3517088.qx3zqy7 LAB ACTIVITY 1 public class LabProgram { INM + ∞ 2 25.20.1: LAB: Write convert() method to cast double to int 3 public static int convert (double d) { /* Type your code here */ 4 5 6 7 } 8 public static void main(String[] args) { 9 System.out.println (convert (19.9)); 10 11 12} } System.out.println(convert(3.1)); LabProgram.javaIn this class all the methods have public modifiers. Instructor -int ID -String name -String status Instructor(int ID, String name, String status) void setiD(int ID) void setName(String name) void setStatus(String status) int getiDO String getName) String getStatuso String toString0 Select one: O True O FalseUse this code template to continue the code: public Item(String name, double weight, int value) Initializes the Item’s =ields to the values that are passed in; the included =ield is initialized to false public Item(Item other) Initializes this item’s fields to the be the same as the other item’s public double getWeight() public int getValue() public boolean isIncluded() Getter for the item’s fields (you don’t need a getter for the name) Given code: public class Item { private final String name; private final double weight; private final int value; private boolean included; public Item(String name, double weight, int value) { this.name = name; this.weight = weight; this.value = value; } public Item(Item item){ name = item.name; weight = item.weight; value = item.value; } public void…
- Implement the class Character The role should be “primary” or “secondary” all other values are not acceptable. Considercapital and small letters variance. The gender should be “m” or “M” for male or “f” or “F” for female. The age should be a positive value. The giveRaise method increase the salary of a character by a given percentage with amaximum salary of 10000. The toString method returns a string that describes the character. For example: [Elisabeth Kane, female, 35, primary,4500$] 2) Implement the class Play A Play can have at most 20 characters. The real number of characters is registered in nbOfCharacters and is updated automaticallywhen a new character is added. AddCharacter method adds a new character to the characters array and updates thenbOfCharacters value. The attribute nbPlay keeps track of the number of Plays created. The toString method returns a string description of the play including name, genre and thenames of all the characters.Example: [The Opera…Create an automobile class that will be used by a dealership as a vehicle inventory program. The following attributes should be present in your automobile class: private string make private string model private string color private int year private int mileage Your program should have appropriate methods such as: default constructor parameterized constructor add a new vehicle method list vehicle information (return string array) remove a vehicle method update vehicle attributes method. All methods should include try..catch constructs. Except as noted all methods should return a success or failure message (failure message defined in "catch"). Create an additional class to call your automobile class (e.g., Main or AutomobileInventory). Include a try..catch construct and print it to the console. Call automobile class with parameterized constructor (e.g., "make, model, color, year, mileage"). Then call the method to list the values. Loop through the array and print to the screen.…Exercises: PolymorphismProblem 1. VehiclesWrite a program that models 2 vehicles (Car and Truck) and will be able to simulate driving and refueling them inthe summer. Car and truck both have fuel quantity, fuel consumption in liters per km and can be driven givendistance and refueled with given liters. But in the summer both vehicles use air conditioner and their fuelconsumption per km is increased by 0.9 liters for the car and with 1.6 liters for the truck. Also the truck has a tinyhole in his tank and when it gets refueled it gets only 95% of given fuel. The car has no problems when refueling andadds all given fuel to its tank. If vehicle cannot travel given distance its fuel does not change.Input On the first line - information about the car in format {Car {fuel quantity} {liters per km}} On the second line – info about the truck in format {Truck {fuel quantity} {liters per km}} On third line - number of commands N that will be given on the next N lines On the next N lines –…