Question

Use the UML tool to draw a UML class diagrambased on the descriptions provided below.

1. The diagram should be drawn with a UML tool

2. It should include all the classes listed below and use appropriate arrows to identify the class relationships

3. Each class should include all the described attributes and operations but nothing else

4. Each constructor and method should include the described parameters and return types - no more and no less

Please do one of the following in Java

Descriptions of a Price
Because of the inherent imprecision of floating-point numbers, we represent the price by storing two values: dollarsand cents. Both are whole numbers.

Both values are needed in order to create a new Price.
Once a Price has been created, it can no longer be changed. However, it provides two getters: one to access the value of dollars, the other to access the value of cents.

Descriptions of a GroceryItem
Grocery items have a name (text) and aprice.  
In order to create a new GroceryItem, both a name and a price need to be provided.
Once a GroceryItem has been created, the name can no longer be changed, but the price can be updated as needed. GroceryItem includes getters for each of the attributes (fields).

Answer 1

Price Class Diagram:

• Price class having two attributes dollars and cents of int type.
• Two constructors. One default constructor and another parametrized constructor.
• createNewPrice method to create price using dollars and cents. It returns the price value of float type.
• getDollars and getCents methods to access value of dollars and cents.

GroceryItem Class Diagram:

• Two attributes. name with String type and price of Price type from above Price class.
• Two constructors. One is default and another parametrized constructor.
• createNewGroceryItem method with name and price attributes and return name of grocery item as String type.
• As name should not be changed, no setter method for name.
• setPrice to update value for price.
• getPrice to access value of price.
• getName to access name.

Price and GroceryItem combined class diagram with relation:

• GroceryItem uses Price. It is depicted using arrow as shown in below diagram.
• 1 GroceryItem can have single price which is depicted by (1 -> 1) class relation in diagram below.

Price Program in Java:

public class Price {

int dollars;

int cents;

public Price() {

super();

}

public Price(int dollars, int cents) {

super();

this.dollars = dollars;

this.cents = cents;

}

float createNewPrice(int dollars, int cents){

return dollars + cents;

}

public int getDollars() {

return dollars;

}

public int getCents() {

return cents;

}

}

Screenshot:

GroceryItem Program in Java:

public class GroceryItem {

String name;

Price price;

public GroceryItem() {

super();

}

public GroceryItem(String name, Price price) {

super();

this.name = name;

this.price = price;

}

String createNewGroceryItem(String name, Price price){

return name;

}

public void setPrice(Price price) {

this.price = price;

}

public Price getPrice() {

return price;

}

public String getName() {

return name;

}

}

Screenshot: