J2EEvs.NET

J2EE vs .NET Presentation by(  ): Saloni Tyagi E-Mail: saloni_tyagi2007@yahoo.com

Agenda ,[object Object],[object Object],[object Object],[object Object]

Platform and Profile ,[object Object],[object Object],[object Object],[object Object],[object Object]

.NET framework ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

OPERATING SYSTEM HARDWARE COMMON LANGUAGE RUNTIME(CLR) .NET FRAMEWORK BASE CLASS LIBRARY WINDOWS FORMS ASP.NET CONSOLE ADO.NET .NET FRAMEWORK CLASS LIBRARY COMMON TYPE SYSTEM COMMON LANGUAGE SPECIFICATION C# VB.NET VISUAL C++ OTHERS.. WINDOWS PRESENTATION (WPF) WINDOWS COMMUNICATION (WCF) WINDOWS WORKFLOW (WWF) WINDOWS CARDSPACE LINQ ASP.NET 3.5 ADO.NET ADDITIONAL ENHANCEMENTS.. . NET 3.0 . NET 3.5 Visual Studio.NET .NET framework 2.0 and SP1

Java Virtual Machine ,[object Object],[object Object],Java Compiler CLASS- Files Classloader/ Verifier JIT Native Code Interpreter Garbage Collection, Security Manager‘ Multithreading, ...

.NET Runtime ,[object Object],[object Object],[object Object],C# VB.NET C++ Perl Compiler MSIL + Metadata Loader/ Verifier JIT Managed Code Execution Garbage Collection, Security, Multithreading, ...

Commonalities and Differences ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Object Model (Java) ,[object Object],[object Object],Types Primitive Types Reference Types Interfaces Arrays Classes

java.lang.Object ,[object Object],public class Object { public Object(); public boolean equals(Object obj); public final Class getClass(); public int hashCode(); public final void notify(); public final void notifyAll(); public String toString(); public final void wait() throws InterruptedException; public final void wait(long timeout) throws InterruptedException; public final void wait(long timeout, int nanos) throws InterruptedException; protected Object clone() throws CloneNotSupportedException; protected void finalize() throws Throwable; }

Object Model (.NET) ,[object Object],Types Value Types Reference Types System Value Types User Value Types Enumerations Interfaces Pointers Self-describing Types Arrays Classes Delegates Boxed Values User-Defined

System.Object ,[object Object],public class Object { public virtual int GetHashCode(); public virtual bool Equals(); public virtual String ToString(); public static bool Equals(object a, object b); public static bool ReferenceEquals(object a, object b); public Type GetType(); protected object MemberWiseClone(); protected virtual Finalize()´; }

Important Base Classes No big conceptual differences here. Java.net: Sockets, URL, ... System.Net: Connection, HttpWebRequest, ... Communication java.util: Lists, Maps, Sets, Trees, Vectors System.Collections: ArrayList, BitArray, Maps, Queue, List, Stack Container SWING, AWT Windows.Forms Web.Forms GUI Java .NET

Multithreading in .NET and Java ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Java JAR files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Assemblies in .NET ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Menifest Resources metadata TYPE1 IL CODE TYPE2 IL CODE TYPE3 IL CODE

Commonalities and Differences ,[object Object],[object Object],[object Object],[object Object]

Database Access in Java ,[object Object],ODBC DB ODBC Driver JDBC/ ODBC Bridge Driver Manager Connection Statement Prepared Statement Callable Statement Resultset Application

Database Access in .NET ,[object Object],[object Object],Data Source DataSetCommand Command Connection DataReader DataSet Client Managed Provider

ADO.NET ,[object Object],[object Object],[object Object],[object Object],[object Object]

Java Server Pages and Servlets ,[object Object],[object Object],Web Server Client (1) get a.jsp (2) process JVM JSP Other Components Database (4) result (5) HTTP file Servlet (3) gen. Servlet Servlet Impl.

ASP.NET (Server-Side Scripting) ,[object Object],IIS 5 Web Server Client (1) get a.apx (2) process .NET Engine .NET Assembly Other Assemblies Database (3) result (4) HTTP file

Login Example JAVA LOGIN .NET LOGIN

.NET and/or Java ? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

J2EEvs.NET

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