Comparison of Microsoft's .NET and Sun's J2EE: Examining App Servers and Dev Frameworks, Slides of Internet and Information Access

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A Comparative Analysis of

Microsoft’s .NET and Sun’s J2EE

Outline

• Part 1
  • Introduction
• Part 2
  • High level description
  • Pros & Cons
  • Paralleling Technologies
• Part 3
  • Key Differences/ Underlying Philosophies
  • JVM vs CLR
• Part 4
  • .NET Overview

1. Application Servers

• In the beginning, there was darkness

and cold. Then, …

Centralized, non-distributed

terminals

mainframe

terminals

Application Servers

• In the 90’s, systems should be client-

server

What is...?

• Enterprise Computing
• A framework
  • Ties together a bunch of discrete objects/components
  • Makes it easier to use complex technologies.
  • A Wrapper
  • A skeleton/building block
• J2EE and .NET

Forrester Report: The State of

Technology Adoption Source: http://download.microsoft.com/download/c/7/5/c75837dc-90bb-44d8- ae70-db7bcc5980b9/TheStateofTechnologyAdoption.pdf

J2EE High Level Description

• A specification (not a product)
• Based on J2SE
• http://java.sun.com/j2ee/compatibility.html

J2EE High Level Description

App 1 App 2

Application Client

Dynamic HTML Pages

JSP Pages

EJB EJB

DB DB

Client Tier

Web Tier

Business Tier

EIS Tier

Client Machine

J2EE Server Machine

DB Server Machine

J2EE High Level Description

Client Tier Server Tier^ EIS Tier

Web Container^ EJB Container Container^ Applet

Application Client Container

JSP Pages& Servlets JavaBeans

Session Beans Entity Beans Message-Driven Beans

Database

J2EE High Level Description

• Client Tier
  • Web Clients
    • Applets, HTML, XML, etc..
  • Application Clients
    • GUI

J2EE High Level Description

• Business Tier
  • Enterprise Java Beans
    • Session Beans
      • Stateless
      • Statefull
    • Entity Beans
    • Message Driven Beans

.NET High Level Description

• Developer Choice
  • Common Language Runtime
• Platform Interoperability
  • "You very seldom want to port an existing application between platforms, but you do want to interoperate between applications regardless of platform; therefore, industry standard support for Web Services is of great importance.” - -Dan Fox, Solutech, Inc. Author of: Building Distributed Applications with Visual Basic.NET

.NET Framework

• Programming model of the .NET

environment for building, deploying, and

running Web-based applications, smart

client applications, and XML Web

services.

• It manages much of the plumbing,

enabling developers to focus on writing the

business logic code for their applications.

.NET Framework

• The .NET Framework includes the

common language runtime and class

libraries.