UML Exercise: Introduction to OOP Concept

Q1) Given the following incomplete code: 

public class House {

  private String type;

  private String address;

  private int noOfRooms;

  private double price;

 

 

   

  public void setPrice(double price)

  {

   ________________________________ (i)

  }

  

  public String getAddress()

  {

    _______________________________ (ii)

  }

  public double calcMonthlyPayment(int months)

  {

   //codes are not shown here

  }

}//end of House class


Draw a UML class diagram representing the code.

House

-type: String

-address: String

-noOfRooms: Int

-price: double

+setPrice(double) : void

+getAddress() : String

+calcMonthlyPayment(int) : double

 














Q2) Based on the following scenario, answer the following questions:

You are appointed to develop a program for Philipsi Pressure Cooker company. The program should keep information about the pressure cooker which includes String for model (e.g. HD2139, RL1198, BF2222, EPC-6000s), char for size (e.g. L (large), M (medium), S (small)), String for colour (brown, silver, golden, white) and double for price (e.g. RM309.00, RM169.00, RM399.00, RM270.48). There will be a method in the PressureCooker class, named calculatePrice(). This method receives ONE (1) parameter: an int type variable named quantity. The method returns price, which is of type double. For this purpose, a class named PressureCooker has to be defined.

 

a)      a)Draw a UML class diagram for PressureCooker class.

b)      b)Write a Java program for PressureCooker class.

 

 

PressureCooker

model: String

size: char

colour: String

price: double

calculatePrice(int) : double

 













b) 
public class PressureCooker {

  private String model;

  private char size;

  private String colour;

  private double price;

 

public double calculatePrice (int quantity)

            {

             return price * quantity;

            }

 

 

}

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