Write a java program that:

Learning Goal: I’m working on a java question and need support to help me learn.

Learning Outcome(s):

Develop a program based on specification using programming language elements including syntax, data types, conditional statement, control structures, procedures, arrays, objects and classes

 

Question One

Write a java program that:

  • Create an abstract class named Shape that contains three integers length, breadth, radius and an empty method named printArea().
  • Provide three classes named Rectangle, Triangle and Circle such that each one of the classes extends the class Shape.
  • Each one of the classes contains only the method printArea() that read the requested values and prints the area of the given shape.
  • Provide a class Main that create a rectangle, a triangle and a cercle then print their respective areas.

Note: you should Include the screenshot of the program output as a part of your answer. Otherwise, zero marks will be awarded.

Learning Outcome(s):

Develop a program based on specification using programming language elements including syntax, data types, conditional statement, control structures, procedures, arrays, objects and classes

Question Two

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 testerclass named InvoiceTest that demonstrates class Invoice’s capabilities by creating two invoices then changing and printing their characteristics.

Note: you should Include the screenshot of the program output as a part of your answer. Otherwise, zero marks will be awarded.

Learning Outcome(s):

Explain the basic principles of programming, concept of language, and universal constructs of programming languages.

Develop a program based on specification using programming language elements including syntax, data types, conditional statement, control structures, procedures, arrays, objects and

Question ThreeWrite a complete Java program that do the following:

  • Read your student’s ID number, store it in an array named myStudentNO and print it.
  • find the number of even and odd integers in myStudentNO array

Note: Your program output should look as shown below

 

 

 

 

 

Note: you should Include the screenshot of the program output as a part of your answer and you should enter your student id number. Otherwise zero marks will be awarded.

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