␡
- Code: To Reuse or Not to Reuse?
- What Is a Framework?
- What Is a Contract?
- An E-Business Example
- Conclusion
- References
- Example Code Used in This Chapter
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Page 7 of 7
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Example Code Used in This Chapter
The following code is presented in C# .NET and VB .NET. These examples correspond to the Java code that is listed inside the chapter itself.
The TestShape Example: C# .NET
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace TestShop
{
class TestShop
{
public static void Main()
{
Shop shop = null;
Console.WriteLine("Instantiate the PizzaShop class:" + "\n");
try
{
// new pizzaShop();
shop = new PizzaShop();
}
catch (Exception e)
{
}
string[] inventory = shop.getInventory();
// list the inventory
for (int i = 0; i < 5; i++)
{
Console.WriteLine("Argument" + i + " = " + inventory[i]);
}
// buy an item
shop.buyInventory(inventory[1]);
}
}
public abstract class Shop
{
CustList customerList;
public void CalculateSaleTax()
{
Console.WriteLine("Calculate Sales Tax");
}
public abstract string[] getInventory();
public abstract void buyInventory(string item);
}
public interface Nameable
{
String Name
{
get;
set;
}
}
public class PizzaShop : Shop, Nameable
{
string companyName;
string[] foodOfferings = {
"Pizza",
"Spaghetti",
"Garden Salad",
"Anitpasto",
"Calzone"
};
public override string[] getInventory()
{
return foodOfferings;
}
public override void buyInventory(string item)
{
Console.WriteLine("\nYou have just purchased " + item);
}
public String Name
{
get { return companyName; }
set { companyName = value; }
}
}
public class DonutShop : Shop, Nameable
{
string companyName;
string[] menuItems = {
"Donuts",
"Muffins",
"Danish",
"Coffee",
"Tea"
};
public override string[] getInventory()
{
return menuItems;
}
public override void buyInventory(string item)
{
Console.WriteLine("\nYou have just purchased " + item);
}
public String Name
{
get { return companyName; }
set { companyName = value; }
}
}
public class CustList
{
string name;
public string findCust() { return name; }
public void addCust(string Name) { }
}
}
The TestShape Example: VB .NET
Module Module1
Sub Main()
Dim myShop As New DonutShop()
Dim inventory() As String
Dim ival As Integer
System.Console.WriteLine("Instantiate the DonutShop class")
inventory = myShop.getInventory()
For ival = 0 To 4
System.Console.Write("Argument ")
System.Console.Write(ival)
System.Console.Write(" = ")
System.Console.WriteLine(inventory(ival))
Next
myShop.buyInventory(inventory(1))
System.Console.ReadLine()
End Sub
End Module
Public MustInherit Class Shop
Dim myCustList As New CustList()
Public Function CalculateSaleTax()
System.Console.WriteLine("Calculate Sales Tax")
Return Nothing
End Function
Public MustOverride Function getInventory() As String()
Public MustOverride Function buyInventory(ByVal i As String)
End Class
Interface Nameable
Property Name() As String
End Interface
Public Class DonutShop
Inherits Shop
Implements Nameable
Dim companyName As String
Dim menuItems() As String = {"Donuts", "Muffins", "Danish", "Coffee", "Tea"}
Public Overrides Function getInventory() As String()
Return menuItems
End Function
Public Overrides Function buyInventory(ByVal item As String)
System.Console.WriteLine("You have just purchased " + item)
Return Nothing
End Function
Private strName As String
Public Property Name() As String Implements Nameable.Name
Get
Return strName
End Get
Set(ByVal value As String)
strName = value
End Set
End Property
End Class
Public Class CustList
Dim name As String
Public Function findCust() As String
Return name
End Function
Public Function addCust(ByVal c As String)
Return Nothing
End Function
End Class
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