1. DotNet Vs. J2EE Mosaad Alomery CIS- 764

2. Mosaad Alomery - CIS 764 the internet platform –Services Electronic commerce Communications (e-mail, news, chat, etc.) –Requirements Development Maintenance Security Usability

3. Mosaad Alomery - CIS 764 Solutions J2EE Manufacturer: Sun Language: Java Date of Birth: 05/23/1995 NET Manufacturer: Microsoft Language: C # Birthday: ~ 2000

4. Mosaad Alomery - CIS 764 A typical.NET Enterprise Solution SQL Server IIS on W2k Server.NET managed component ASP.NET Windows Client Browser

5. Mosaad Alomery - CIS 764 A typical J2EE Enterprise Solution DB Server Java App Server EJB Servlet JSP Java Client Browser

6. Mosaad Alomery - CIS 764 Java vs.Net Solutions –Both multi-tiered – similar technologies –Both support “standards” –Both offer different tools & ways to achieve the same goal. –A lot of parallelism can be seen.

7. Mosaad Alomery - CIS 764 Microsoft.Net vs. J2EE Comparison CLR vs JVM C# Managed C/C++ Lots of other Languages VB.Net CLR CTS GC Security Runtime Services MSIL Windows OS Java JRE (JVM) GC Security Runtime Services Byte Codes MacUnixLinux Win Both are ‘middle layers’ between an intermediate language & the underlying OS

8. Mosaad Alomery - CIS 764 The TMC Petshop Performance Case Study Java Pet Store is Sun’s primary blueprint application for J2EE –Source: http://java.sun.com/j2ee/blueprintshttp://java.sun.com/j2ee/blueprints –Illustrates best coding practices for J2EE –Ships as a sample application in IBM Websphere, Oracle Application Server 9i, Sun iPlanet, and BEA WebLogic The.NET Petshop is a port of the J2EE Java Pet Store to.NET –Source: http://www.gotdotnet.com/comparehttp://www.gotdotnet.com/compare –Implements the same functionality as Java Pet Store –Illustrates best coding practices for.NET Framework In the TMC Petshop Performance Case Study, The Middleware Company implemented both the Java Pet Store and the.Net Petshop. –All versions used the same hardware and OS

9. Mosaad Alomery - CIS 764 Java Pet Store vs..Net Pet Shop

10. Mosaad Alomery - CIS 764 14000 7500 9000 5000 2500 15500 11500 Java Pet Store Lines of Code Required User Interface 4,410 Data Tier Middle Tier 2,865.NET Petshop 14,273 5,891 Configuration Total Lines of Code 710 5,404 76141274 2,566 Porting Java Pet Store to.NET

11. Mosaad Alomery - CIS 764 The “Conclusions” Microsoft concludes: ".NET is 28 times faster than J2EE" –Because: –“Java PetShop” is Sun’s “best practice” example –Numbers compared with published Oracle results –Identical functionality, all code published and documented Can we believe the raw numbers?

12. Mosaad Alomery - CIS 764 The Shootout afterwards Java PetShop: J2EE blueprint application –Built by Sun to show "best practice" design –Implementation by TMC missed quite a few optimizations.NET PetShop –Built by TMC (with help from MS) with different design Plain classes instead of container managed components Middle tier moved into ASP.NET Using stored procedures instead of ad-hoc SQL Uses server-side caching of ASP.NET Many performance optimizations applied Most Java devotees find this highly unfair

13. Mosaad Alomery - CIS 764 Access to Data JDBC Driver Access to Data ADO + OLE DB

14. Mosaad Alomery - CIS 764 Choosing between Java and.Net The ultimate choice usually depends not on technical superiority, but on: –cultural/”religious”/political preferences –Skill set of your developers –Customer preference –Vendor relations

15. Mosaad Alomery - CIS 764 References J2EE: http://java.sun.com http://java.sun.com/j2ee/.NET http://www.microsoft.com/net/ http://elric.fib.upc.es/punto_net_archivos/v3_document.htm Microsoft.Net vs. J2EE, Suresh Ramachandran & Duke Energy Java vs..Net, Bent Thomsen, Department of Computer Science,Aalborg University.

16. Mosaad Alomery - CIS 764 Questions