Intellij Idea Ide

7/28/2019 Intellij Idea Ide

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Maximizing stabilitywith IntelliJ IDEA

The most in te l l igent Java IDE around


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Maximizing stability with IntelliJ IDEA

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CONTENTS

Introduction: to IDE or not to IDE? 2

Why IntelliJ IDEA 3

HigherComfortandProductivity 3

Detailsmakethedifference 3

Whenaneditorisreallyintelligent 3

IntelliJIDEA:HigherROI 4

ComingInOnTimeandUnderBudget 4

StaticAnalysisEffectiveRemedy 5

RefactoringReduceMaintenanceCosts 6

IntelliJIDEAHowYouCanSellBetter? 7

Conclusion 9

Develop with pleasure 10

Customers 10

Awards 10

References 11

Contents

Copyright2008 JetBrains, Inc.


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Introduction: to IDE or not to IDE?

AccordingtoresearchcompletedbytheStandishGroup[7],onlyonethirdof

U.S.projectsin2004werecompletedontimeandonbudget,withallfeatures

andfunctionsoriginallyspecified.Morethanhalfwerecompletedoverbudget,

late,andwithfewerfeaturesandfunctionsthaninitiallyspecified.Eachsixthto

seventhprojectfailedentirely.

Tomitigatetheserisksandsucceed,oneneedsthemeanstofacilitatethedevel-

opmentprocess,improvecodequalityandlowerthetotalprojectcostofowner-

shipandrelatedexpenses.Andquiteclearly,atthecoreofanysoftwareproject

areitsdevelopersandthetoolstheyuse.

Thetruebelieversofthesoftwaredevelopmentworldactuallyfollowtwoop-

positereligions:

Thefirstcampbelieves: The more experienced your team, the better the results

Thesecondonestates: The better your development tools, the more productiveyour team.

ThisideawasnicelyexplainedtothepublicbyOliverSteele[1],whohaseven

createdagraphicalrepresentationofthesetwopointsofview:

Thispictureverycloselyemulatesreality,butthequestionarises:Why are peo-

ple so rarely ready to compromise?Whydonttheybelievethatcombiningthe

twoapproachescanmaketheproductivitypicturemuchmoreattractive?Just

equipadevelopmentteamofanylevelwithaprofessionaltoollikeIntelliJIDEA

andtheresultwillbeimmediateandcompelling:

Introduction

There are two kinds of people

in the world, those who believe

there are two kinds of people in

the world and those who dont.

Robert Benchley

Benchleys Law of Distinction

US actor, editor, author &

humorist (1889 - 1945)


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Why IntelliJ IDEA

Higher Comfort and Productivity

Details make the difference

WhenspeakingabouthowcomfortabledevelopersfeelwithIntelliJIDEA,ween-

counteraseriousproblemcomfortcannotbemeasured.Howcanoneexplain

inmeasurableterms,forexample,whyonechairismorecomfortableforyou

thananother?Whatfeatureorqualityismoreimportantthananother,andTO

WHATEXTENT?Certainly,itispossibletocompareeachfeaturestepbystep

thisbackismoreergonomic,thatarmisadjustable,theswingingactionhas

anadjustablespring,thishasanadjustablehead-rest,thisisItwouldbegreat

ifsuchadvantageswerefew,easilyidentifiedandeasilymeasured.Butwhatif

therearehundreds?Orthousands?Whatifthecomfortlevelresultsfrommany

smalldetailswhatthen?

IntelliJIDEAscomfortlevelissomethingthatcanbereallymeasuredempirically.

Anditisimmediatelyevident.IntelliJIDEAsimplynevergetsintheway.Itnever

imposesawayofdoingthings.Rather,itunobtrusivelyprovidesintelligentas-

sistanceandsuggestsimprovementslikenootherdevelopmenttool.

When an editor is really intelligent

EachoftheindividualfeaturesinIntelliJIDEAincreasestheuserscomfortand

contributesto productivity,thewayclosertolerancesandfinerconstruction in

amusicalinstrumentpullthebestperformancefromamusician.Ifthedevilis

inthedetails,soistheintelligencethatmakesaBestofBreedIDE.Forexam-

ple,IntelliJIDEAssavvycodecompletions,convenient-to-useintentionactions,

unparalleledcodeanalysistoolsandmanyincrementaleditorenhancements

eachfeatureseparatelyistop-notchinitsclass.ButIntelliJIDEAstruestrength

andunsurpassedadvantageareinthewhole.Beingfusedtogether,itsfeatures

formanorchestraofpowerfulinstruments.IntelliJIDEAmakesthedevelopers

reallycreativeandpullstheverybestfromthemduringdevelopment.

Whatbenefitswillanyteamgainbyusinganintelligenteditorliketheonebuilt

intoIntelliJIDEA?Increasedcomfortandenhanceddevelopmentproductivity,at

minimum.Theresultwillbeimmediateandvisible,aslowerprojectcostsandac-

celeratedtime-to-completion.

Why IntelliJ IDEA

IntelliJ IDEA has enabled us to

use a compact, extremely us-

able development environment

for all our developers without

any additional installation or

customization efforts. By bring-

ing good ideas and patterns

near to our developers, we have

enabled them to learn by doing,

having overall quite impressive

results.

Christopher Semturs

Product Development

OBJENTIS Software

Integration GmbH

IntelliJ IDEA has a very conve-

nient and user friendly interface

and a lot of handy and helpful

features. Its IntelliJence, look

and feel, and speed compared

to the rest of crowd, especially

with IntelliJ 4.0, have been a big

plus.

Chetan Shah

Executive Vice President,

Technology

Synygy, Inc.

IDEA knows everything you

want to do. The product boosts

your productivity immediately andafter that, the more you put into

it, the more you get out of it.

Ken Watts

VP Platform Engineering

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IntelliJ IDEA: Higher ROIBesidescomfort,thereisanotherbenefitofIntelliJIDEAanditcanbemeasured.

ThatishowcostefficientitistoownIntelliJIDEA.

Atfirstglance,itmaynotbeobvioushowacommercialproductcanallowacom-

panytosavemoneycomparedtousingfreeproducts.AsBoehmandSullivan

notedin theiranalysisofmodernsoftwareeconomics [5],most ITdecisionsin

theindustrytodayaremadebyfindingtheminimumcostapproachasopposed

tosearchingforthemaximumvaluesolution.Ittakesmorethanremarking,You

getwhatyoupayfor,toovercomethissystemicpredispositiontovalueshortterm

penniesabovelonger-termdollars.

Letustakealookatthestateofprojectsinthesoftwareindustrytoseewhy

thosetemptingshort-termpenniesoftenturnintosurprisinglyexpensivedrains

onproductivityandoperatingbudgets.

Coming In On Time and Under Budget

Detailedprojectanalysisshows[6]thatforasinglesoftwareorganization, the

estimated time to rework code (fix defects and bugs in software) can be as

high as 80% of total project development costs.Doesanybodyplanforsuch

anicredibleexpenseintheirprojectbudgetstorectifymistakes?Ofcoursenot,

butmistakesdocometopassnevertheless.

The2004CHAOSreportfoundtotalU.S.projectwastetobeabout$55billion[8](includinglostdollarvalueandcostoverruns).Totalprojectspendingwas

foundtobe$255billioninthe2004report.

TheU.S.Department ofCommerce[4]reported that theeconomicconse-

quencesofinadequatesoftwarequalitymanagementpractices,namelytest-ing,amountedto$59.5billionwastedperyear.

Thenumbersaresimilar,arentthey?

Why IntelliJ IDEA

IntelliJ IDEA will save you time

and money. For developers,

IDEA promotes the rapid cre-

ation of clean, reusable, and

well documented code. For

managers and architects, IDEA

makes it possible to quickly nav-

igate, review, and refactor code

projects large and small.

Mike Sick

VP Development

UserMagnet, Inc.

From a business point of view,

the cost is very attractive. Not

free, but at a really good price

point that immediately offers a

very apparent ROI.

Bruce Kratz

Director, Engineering East

HP Web Services Management

Organization


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Itisobviousthatmistakesinthetestingprocesscangiverisetomonstrousre-sultsallthewayuptototalprojectfailure.

AsoriginallynotedbyBarryBoehm,the defect repair cost increases by a fac-

tor of ten for each successive stageofdevelopment.Adefectthatcostsone

hourtofind,fix,andretestinunittests,wouldcosttenhoursinthenextstage,

100hourstwostageslater(systemtest)and1000hoursaftershipping.

Withsuchexponentialincreases,weshouldhardlywonderattheastronomical

costsofoverruns!

Fortunately,SoftwareEngineeringhasinitsarsenalvariousefficientmethodsto

dramaticallyreducesuchnoticeableoverhead.IntelliJIDEAcontainsmanycost

reductionfeaturesthatcomestandard.Furthermore,themakersofIntelliJIDEAwerethefirsttorealizetheimportanceofsuchfeatures,implementthemina

product,andintheprocesscreatewhatisconsistentlyreferredtoastheindus-

trysleadingJavaIDE.

Static Analysis Effective Remedy

Staticanalysis(codeinspections)isasetoftechniquesforanalyzingsource

codeandsoftwaredesigns.Itdoesnotrequirethesoftwaretobeexecutedto

produceresults.AsKhaledElEmamshows[2,3],theaverageeffectivenessof

inspections(inproportiontodefectsinthecodethatarefoundduringinspection)

is57%.Thismeansmore than half of the defects in the code can be found

using inspections. According toKhaled ElEmam, code inspections allowone to reduce any project cost by 35-40%(andalsoraisecodequalityand

reduceriskofprojectfailure)duetotimelylocationandcorrectionofdefects,

increasedcodereuse,andhigherdevelopmentproductivity.

Thefigurebelowshowsthesequenceofmechanismsthatwouldleadtocon-

cretebenefitsfromtheuseofstaticanalysisfeatures,asfoundinIntelliJIDEA.

IntelliJIDEAistheonlyIDEwithmore than 600 typesofintelligentautomated

codeinspectionsintegratedseamlesslywithinit.Manycompetitorsdonteven

haveinspectionfunctionalities.

Besidesfindingdefects,IntelliJIDEAeasestheproblem-correctionprocessby

Why IntelliJ IDEA

Editors ability to perform

background code analysis al-

lows developers to write code

that compiles and runs correctly

the first time, reducing the time-

consuming edit-compile-debug

cycle.

Gordon Tyler

Software developer

Quest Software, Inc.

Most of our engineers do not

get any errors at all during com-

piling because IDEA catches

them all during editing. The time

we save is remarkable.

Ken Watts


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providingready-to-go improvementsfor themostfrequenterrors.Moreover,apowerfulon-the-flycodeanalysismechanismmakescodeanalysisevenmore

efficient,showingpossibledefectsinstantly.Asaresult,thecodeislesserror-

prone;sothereisnoneedtorecompileitfrequently,whichsavesadditionaltime,

especiallyonlargeprojects.

Staticanalysisresultsinhighercodequality.Aswewillshowbelow,higherprod-

uctqualityalsomakesforincreasedprofit.

Refactoring Reduce Maintenance Costs

Current ITmarket research[9, 10, 11] shows thatcustomization, including

legacy modernization and integration projects, represents more than halfof all software budgets.Averagemaintenancecostsarehigherthandevelop-

mentcosts,andthisexcessespeciallyforcustomsystemdevelopmentcan

turnouttobeamultiplieroftwo,ten,orevenonehundredfold!

ResearchbyRobertM.Leitch[12,13]showedthatapplying refactorings can

reduce software maintenance costs by almost half.

Refactoringisnotsomeesotericprogrammingtechniqueconceivedjustfor

computersciencestudentstoargueaboutwiththeirprofessors.Theproblemsit

solvesareexpensiveandoftenhavestrong,negativeconsequencesforcompa-

niesintermsofcustomerrelations,dataaccuracy,downtime,andcodemainte-

nance.Properlycarriedout,refactoringmakescodelessexpensivetomaintain,

easiertoupdate,morereusableforlaterprojects,andlessconfusingtoother

programmerseitherinotherdepartmentsorwhocomealonglatertoreuseor

redesignit.Forcompanies,thequalitativeROIisimmediateasbugsstopcreep-

ingintocode,cleancodeisproducedfaster,andfewerprogrammershaveto

spendtimecorrectingthemistakesofothers.These savings quickly become

quantitative, as general overall costs go down.

Refactoring enhances architectural flexibility. Refactored code is reduced in

overallsize,soitbecomeslessknottyandcomplex,andbecomeseasiertoread.

Suchcodecanbemoreeasilymodified,extendedandadaptedwithoutrisking

completesystemdisintegration.

Why IntelliJ IDEA

IntelliJ IDEAs powerful refac-

torings coupled with its deep

insight into our code provide

us with the knowledge and the

tools to write new code and

maintain existing code in an ef-

ficient manner.

Gordon Tyler

Software developer


IntelliJ IDEA helps us by pro-

viding assistance in the every-

day task of writing code by au-

tomating repetitive tasks in an

intelligent manner and giving

incredible insight into our codes

structure and semantics.

Gordon Tyler

Software developer


IDEA is the best tool to use to

learn about code that you didnt

write personally.

Brian Robinson

Senior software designer


Organization


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Foreverydaycoderefactoring,IntelliJIDEAcanbecomeaverypowerfulhelpinghandforanymaturedeveloper,savinginvaluabletimeandresources(savings

whichequatetolowerprojectcosts).

Inthisarea,amongothers,IntelliJIDEAexcels.Itoffersanextensiverefactor-

ingarsenal.Morethan60distincttoolsautomatetimeconsumingandtedious

refactoringproceduresandmakeIntelliJIDEAtheindustrysleadingrefactoring

specialist.In refactoring, IntelliJ IDEA has no equal.

CodingwithatoollikeIntelliJIDEAissafer;itdoesnotletyouproduceincom-

patiblecode,andalwaysprovidesthenecessarywarningstohelpavoidsuch

anoutcome.Moreover,itspowerfulUNDOstack,plussmartLocalHistoryfea-

ture,letsyouroll-backtoapreviousfileversion,takingintoaccountallrelevantproject-levelchanges.AllIntelliJIDEAcomponentsworkasasingle,well-tuned

machine,intotalharmony,aperformancelevelimpossibletoobtainfromany

IDEwithlooselycoupledmodules.

IntelliJ IDEA How You Can Sell Better?

Itiswellknownthatthehigherqualitycodeasoftwarecompanyproduces,the

loweracustomerspost-purchasecosts.Butwhatisntaswellknown,ishow

muchonecanalsosaveintheprocessofproducingbettercode.

Basedondatacollectedaboutsoftwaredefectdensityfromcompaniesatdiffer-

entmaturitylevelsandpublishedbyC.Jones[14],andusinghisownmethod,KhaledElEmaminhissurveyhascalculatedthereductionincustomerowner-

shipcostsasaresultofavendorsimprovedsoftwarequality.

Itwasfoundthatthecosttocustomerslowereddramaticallyassupplierand

softwarematurityincreased.A customers cost reduction between the worst/

average and best-in-class companies, depending on business sector, proj-

ect size, and country, ranged from 53% to 74%!

Thismeansacustomerwhobuyssoftwarefromacompanythatdeliversabest-

in-classproductcuts post-purchase costs by about 70%comparedtothosev

whobuythesametypeofsoftwarefromaworst-in-classperformer,and more

than 50%lessthaniftheybuyonlyanaverageperformer.

Why IntelliJ IDEA

IDEAs refactorings give our

developers the ability to make

structural changes to their codewith the confidence that it will

still compile and run correctly

afterwards.

Gordon Tyler

Software developer


IntelliJ IDEA improves both the

quality and predictability of sched-

ules, which improves customer

satisfaction, so it has a positive

effect on the bottom line.

Ken Watts


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Thefactis,companiesthatproducehigherqualitysoftwarelookmoreattractivetothemarket,andnotonlythat,theycanbetterjustifytheirpricesandrates,

becausetheircodequalityprovidesanoverallsavingstotheircustomerssav-

ingsthat,inmanycasesexceedtheactualinitialandannuallicensingcostsof

thesoftware.

AllthesefactorsholdtrueforIntelliJIDEA.JetBrainsdeveloperswritethecom-

panysproductsusinganadvancedintelligentdevelopmenttool(IntelliJIDEA)

sotheyproducehigherqualitycode.JetBrainscustomerswhouseIntelliJIDEA

saveontheirpostpurchasecosts,justasdotheircustomers.

Why IntelliJ IDEA

Were developing enterprise-

level software for financial in-

stitutions, telecoms, and other

large customers who spend

anywhere from hundreds of

thousands to millions of dollars

on our products. Fault toler-

ance, high scalability and non-

stop operation are critical and

our code has to be top quality.

IDEA allows us to produce a

better product, faster and more

efficiently.

Bruce Kratz

Director, Engineering East


Organization


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Conclusion

Intheend,whatdoesitalladdupto?Ontheonehand,byusingIntelliJIDEA

youcandramaticallyreduceyourprojectexpensesandmaintenancecosts.On

theother,youcanbetterjustifyyourserviceratesandproductpricesbecause

youproducebest-of-breedcode.Clearly,yourrevenuewillshootup.Youllsee

theresultsassoonasyoustartusingIntelliJIDEA,andyouhavenothingtolose

butyouroldIDE.

Higherdeveloperproductivityfollowsfromimprovedworkingcomfort.Morede-

fectsaredetectedandcorrectedbeforetheyaffecttheoverallproject.Theresult

ishighercodequality,ashortertime-to-marketperiod,andadditionaldividends

fromhavingagoodreputation.

Canadoptingthebest-of-breedIDEproduceallthesebenefits?YES.Itsaneasy

assertiontoprovesimplyuseIntelliJIDEA,experienceitsbenefits,andyoull

neverlookback.

Conclusion


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10Develop with pleasure

Develop with pleasure

Customers

More than3000companies, includingmore than100 ofthetop Fortune500

firms,spanningover70countries,nowputtheirtrustinJetBrains.Theyrepre-

sentsuchdiverseindustriesasfinance&banking,automotive,biotechnology,

enterprisesystemsoftwaredevelopment,ITinfrastructuremanufactures,mobile

handsetmakers,fossilfuel& petroleumenergy,andmuchmore.Additionally,

JetBrainstoolsareusedbyuniversitiesallovertheworldtohelpsimplifyteach-

ingandtoencourageimprovedmethodologiesandpracticesinobject-oriented

programming.

Fortune 100

AmericanExpress

BankOfAmerica

CiscoSystems

Citigroup

FORD

FREDDIEMAC/MERRIFIELDWHSE

Hewlett-PackardCompany

GEMedicalSystems

LockHeedMartin

MerrillLynch

NorthropGrumman

Verizon

WaltDisneyWorld

WellsFargoBank

Fortune 500

AgilentTechnologies,Inc.

AlleghenyEnergySupply

Conseco

DTEEnergy

EMC

FannieMae

FirstDataCorporation

Humana

Morgan StanleyCapital International

S.A.

NIKEInc.

Oracle

RaytheonCompany

SunMicrosystems

TribuneInteractive

XeroxCorporationAwards

2007, 2006,2004, 2003 20052005

2008, 2005,2004

2004, 2006 2004, 2003,2002 2003, 2002 2003 2002


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References

OliverSteele,TheIDEDivide,http://osteele.com/archives/2004/11/ides1.

KhaledElEmam:ReturnonInvestmentModelsforStaticAnalysisTools,2.

Klocwork.,2003

KhaledElEmam:TheROIfromSoftwareQuality:AnExecutiveBriefing,3.

KSharpTechnologyInc.,2003.

RTI,TheEconomicImpactsofInadequateInfrastructureforSoftwareTest-4.

ing, Technical Report, National Institute of Standards and Technology

2002.

B.BoehmandK.J.Sullivan,invitedpaper,SoftwareEconomics:ARoad-5.

map, 22nd International Conference on Software Engineering, June,

2000.

Shull,F.,Basili,V.R.,Zelkowitz,M.V.,Boehm,B.,Brown,A.W.,Costa,6.

P,Lindvall,M.,Port,D.,Rus,I.,andTesoriero,R.WhatWeHaveLearned

AboutFightingDefects.InternationalSoftwareMetricsSymposium,Ottawa

Canada.2002.

AnnualCHAOSReport,TheStandishGroupInternational,Inc.,20047.

8 CHAOSChronicles,TheStandishGroupInternational,Inc.,20048.

HowITspendingischanging,McKinseyQuarterly,20049.MorganStanleyCIOSurvey,200310.

IanSommerville,LutzPrechelt,SoftwareEvolution,IanSommerville2004,11.

SoftwareEngineering,7thedition

RobertM.Leitch,AssessingtheMaintainabilityBenefitsofDesignRestruc-12.

turingusingDependencyAnalysis,UniversityofAlberta,2002

EleniStroulia,RobLeitch,UnderstandingtheEconomicsofRefactoring,13.

MacDonald,DettwilerandAssociates,Ltd.,2003

C. Jones, Software Assessments, Benchmarks, and Best Practices:14.

Addison-Wesley,2000.

Develop with pleasure

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