MESDA Conference 2002

MESDA Annual Conference 2002MESDA Annual Conference 2002Software Development TrackSoftware Development Track

Java vs. C#Java vs. C#

MESDA Conference 2002

Presenters

Jeffrey Hoffman, Starlit Software<jeff@starlitsoftware.com>

Paul Stubbs, UnumProvident Corp.UnumProvident Corp. <pstubbs@unumprovident.com>

MESDA Conference 2002

Java

This is a placeholder.

C#

Paul StubbsMCSD, MCSE 4.0, MCP+I, MCT, MCAD .Net

Agenda

Language Features Development Environment Performance Total Cost of Ownership (TCO)

Hello World

using System;using System;

class Helloclass Hello{{ static void Main() {static void Main() { Console.WriteLine("Hello world");Console.WriteLine("Hello world"); }}}}

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Base Class LibraryBase Class Library

ADO .NET and XMLADO .NET and XML

ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

VBVB C++C++ C#C# J#J# ……V

isua

l Stud

io .NE

TV

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l Stud

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.Net Framework

Design Goals

Component Oriented Properties, methods, events Design-time and run-time attributes Integrated documentation using XML No header files, IDL, etc.

Everything is an Object

Design Goals

Garbage Collection No memory leaks

Versioning Built into the framework

Exceptions Baked into the language and framework

Type Safe No unsafe casts

Design Goals

Multi-Platform Win32 , Win64

Rotor FreeBSD

Mono GNU/Linux , Unix, Mac OS X, Solaris

Multi-Language Over 20 languages supported

Interoperability

No need to rewrite everything Interop with COM+, XML, SOAP, DLL

and other .Net assemblies Use .Net assemblies from COM C++

Pointers (in unsafe code) Unsigned integers Can only be run from FullyTrusted code

C# only

Delegates Provide callbacks Eventing model Type safe function pointers Multicast Asynchronous

C# only

Enumerations Group together user defined constants Type Safe

Structs (value types) Created on the stack Passed by value No need to garbage collect

C# only

Foreach Iterate through arrays, collections and

classes Consistent and concise

String[] months = {“Jan”,”Feb”,”Mar”,”Apr”,”May”};

Foreach{string month in months}

Console.WriteLine(“The month is “ + month);

C# only

Properties Accessed as if it were a field Same as getter and setter pattern Maintains relationship between get and

set

Foo.setSize(getSize() + 1);

Label.getFont().setBold(true);

Foo.size++;

Label.font.bold = true;

Java/C++

C#

C# only

Preprocessor Directives Runtime code generation Pass by reference Variable length parameter lists Explicit Interface Implementation

Development Tools

Visual Studio .Net Rich Client development Web Client development Mobile Client (WAP) development Windows CE (PocketPC) development Office 11 (soon) development XML/XSL development Integrated Source Control

Visual Studio .NET

Performance / Pet Shop

Maintainability / Pet Shop

Affordability Windows on Intel delivers more bang

for the buck than the Mainframe or UNIX-based servers

Visual Studio .NET Less code End to End Debugging XCOPY deployment Integrate existing code Use existing developers skills

Summary

C# and Java are very similar Power of C++ simplicity of VB C# is a standard

ECMA-334 C#, ECMA-335 CLI, ISO Robust Development Environment High Performance Lower cost

Links

MaineBytes .Net User Group http://www.MaineBytes.com

Pet Shop benchmark test http://www.middleware-company.com/

j2eedotnetbench/ Comparison of C# and Java

http://www.25hoursaday.com/CsharpVsJava.html (80 page white paper)

Links

Mono http://www.go-mono.com

Rotor http://www.corel.com/ssclii/