In Kotlin, the use of the word constructor is ________ for the primary constructor and is ____________ for the the secondary constructors. required, optional optional, required optional, optional required, required
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
In Kotlin, the use of the word constructor is ________ for the primary constructor and is ____________ for the the secondary constructors.
- required, optional
- optional, required
- optional, optional
- required, required
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- Create a class named Package with data fields for weight in ounces, shipping method, and shipping cost. The shipping method is a character: A for air, T for truck, or M for mail. The Package class contains a constructor that requires arguments for weight and shipping method. The constructor calls a calculateCost() method that determines the shipping cost, based on the following table: Weight (oz.) Air ($) Truck ($) Mail ($) 1 to 8 9 to 16 17 and over 2.00 3.00 4.50 1.50 2.35 3.25 .50 1.50 2.15 The package class also contains a display() method that displays the values in all four fields. Create a subclass named InsuredPackage that adds an insurance cost to the shipping cost, based on the following table: Shipping Cost Before Insurance ($) Additional Cost ($) 0 to 1.00 1.01 to 3.00 3.01 and over 2.45 3.95 5.55 Write an application named UsePackage that instantiates at least three objects of each type (Package and InsuredPackage) using a variety of…The Rockford Daily Clarion wants you to design a class named Issue. Fields include the issue number, the total number of advertisements sold in each issue, and total advertising revenue. Include get and set statements for each field. Include a static method that displays the newspaper's motto, (i.e., Everything you need to know) Include three overloaded constructors as follows. A default constructor that sets the issue number to 1 and the other fields to 0. A constructor that allows you to pass values for all three fields. A constructor that allows you to pass an issue number and a number of advertisements sold but sets the advertising revenue at $50 per ad. Create a class diagram and write the pseudocode that defines the class. Design an application that declares three Issue objects using a different constructor version with each object. Display each Issue's values and then display the motto.a. Modify the FitnessTracker class that includes data fields for a fitness activity, the number of minutes spent participating, and the date. The class includes methods to get each field. In addition, create a default constructor that automatically sets the activity to running, the minutes to 0, and the date to January 1 of the current year. Create an application that demonstrates each method works correctly. b. Create an additional overloaded constructor for the FitnessTracker class you created in Exercise 3a. This constructor receives parameters for each of the data fields and assigns them appropriately. Add any needed statements to the TestFitnessTracker.java application to ensure that the overloaded constructor works
- The classes DateInfo and Student in different packages 1. Create two packages, calendar, and personal_data 2. Create a class called DateInfo inside the package calendar 3. The class DateInfo has only three variables, day (type integer), month (integer), year (integer). 4. The three variables day, month and year, are invisible outside the class DateInfo. 5. Define a constructor for the class DateInfo with three-arguments to initialize the variables day, month and year. 6. Write a method called getDateFormat, that returns a date format example; 19/4/2016 (the method returns a String type for simplification) 7. Create a class called Person inside the package personal_data. 8. The Person class has only two variables, name (type String) and birthDate (type DateInfo). 9. Create two Person objects for Omar and Rami, Omar's birthDate is 28/8/1998 and Rami's birthDate is 13/9/1996(a) Write the cinema class that contains two private data: one to hold cinema location and the other to hold the number of seats in cinema. (b) Write the constructor foe the class that takes two parameters to set the location and the number of seats.Needs to have the if __name__ == "__main__": Build the ItemToPurchase class with the following specifications: Attributes item_name (string)item_price (int)item_quantity (int)Default constructor Initializes item's name = "none", item's price = 0, item's quantity = 0Methodprint_item_cost() Ex. of print_item_cost() output: Bottled Water 10 @ $1 = $10In the main section of your code, prompt the user for two items and create two objects of the ItemToPurchase class. Ex: Item 1Enter the item name:Chocolate ChipsEnter the item price:3Enter the item quantity:1 Item 2Enter the item name:Bottled WaterEnter the item price:1Enter the item quantity:10 Add the costs of the two items together and output the total cost. Ex: TOTAL COSTChocolate Chips 1 @ $3 = $3Bottled Water 10 @ $1 = $10 Total: $13
- Write a class named Employee that has the following fields:• name. The name field references a String object that holds the employee’s name.• idNumber. The idNumber is an int variable that holds the employee’s ID number.• department. The department field references a String object that holds the name ofthe department where the employee works.• position. The position field references a String object that holds the employee’sjob title.The class should have the following constructors:• A constructor that accepts the following values as arguments and assigns them to theappropriate fields: employee’s name, employee’s ID number, department, andposition. • A constructor that accepts the following values as arguments and assigns them to theappropriate fields: employee’s name and ID number. The department and positionfields should be assigned an empty string (""). • A no-arg constructor that assigns empty strings ("") to the name, department, andposition fields, and 0 to the idNumber field.…Create a class of Customer with custName, custAddress, custCnic, custPhone, custType. Create another class of Employee with empName, empAddress, empCnic, empPhone, empType (tele-callrs , doc boy, sales executive , back office). You have to provide both default and parametrized constructors.-------Answer code question below--------- Create a class Student with the following characteristics Implements Cloneable interface. Contain two member variables RollNo & Name. Initialize member variable of using the parameterized (2 parameters) constructor. Implement getRollNo and getName methods which returns respective variable values. Input: PGMCA2017 Amit where, The first line contains RollNo. The second line contains Name. Output PGMCA2017 Amit solution.java code below:
- -------Answer code question below--------- Create a class Student with the following characteristics Implements Cloneable interface. Contain two member variables RollNo & Name. Initialize member variable of using the parameterized (2 parameters) constructor. Implement getRollNo and getName methods which returns respective variable values. Input: PGMCA2017 Amit where, The first line contains RollNo. The second line contains Name. Output: PGMCA2017 Amit solution.java code below: *Do not change any other part of the code other than where it says you can.Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four information as instance variables: a part number (type String), a part description (type String), a quantity of the item being purchased (type int) and a price per item (double). Your class should have a constructor that initializes the four instance variables. Provide a set and a get method for each instance variable. In addition, provide a method named getInvoiceAmount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as a double value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0.0. Write a tester class named InvoiceTest that demonstrates class Invoice’s capabilities by creating two invoices then changing and printing their characteristics.Q 2: Team.java You are writing a program to keep track of a team sport. Write a class, Team.java, that has the following: * two private instance variables: a String named color and an int named score. * a default constructor with no parameters that initializes color to "Red" and score to zero. * a constructor that takes two parameters (one for each instance variable) and sets the values of the instance variables. * a public getter and setter method for each instance variable. * a toString method that returns the color and score in the following format: "Red Team with 0 points."