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AP Computer Science a Premium, 2022-2023 (2022-2023)

AP Computer Science a Premium, 2022-2023 (2022-2023) is an essential resource, providing past papers and solutions to refine your exam technique.

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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 1 preview imageTHETRUSTEDNAMEINTESTPREPCterSciA6full-lengthpracticetestswithdetailedanswerexplanationsOnlinepracticewithatimedtestoptionandscoringComprehensivereviewandpracticeforalltopicsontheexamExperttipsplusBarron's“Essential5”thingsyouneedtoknowWY.ONLINEPRACTICERoselynTeukolsky,M.S.AP®isaregisteredtrademarkoftheCollegeBoard,whichwasnotinvolved
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 2 preview imageDownloadedfromStudyXY.com®+StudyXYSdYe.o>\|iFprE\3SStudyAnythingThisContentHasbeenPostedOnStudyXY.comassupplementarylearningmaterial.StudyXYdoesnotendroseanyuniversity,collegeorpublisher.Allmaterialspostedareundertheliabilityofthecontributors.wv8)www.studyxy.com
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 3 preview imageb/BARRON'SComputerScienceAPremium2022-2023RoselynTeukolsky,M.S.
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 4 preview imageAcknowledgmentsManypeoplehelpedinthecreationofthisbook.Iwouldliketothankmyincredibleeditor,SamanthaKarasik,forherexpertiseandassuranceintakingthereinsoftheproject.ThanksalsotoMeganBuckman,ChristineRicketts,JeffBatzli,AlisonMaresca,JalisaValladares,MandyLuk,andalltheothermembersoftheKaplanstaffwhoworkedontheproductionofthebookandonlinetests.Iammostgratefultomyformereditors,LindaTurnerandAnnieBernberg,fortheirfriendlyguidanceandmoralsupportovertheyears.AveryspecialthankyoutoSageMillerforhercarefulreadingofthemanuscriptandhervaluablesuggestions.ThanksalsotoJudyHromcikandRichardKickfortheircontributionsovertheyears.Myhusband,Saul,continuestobemypartnerinthisproject—typesettingthemanuscript,producingthefigures,andgivingadviceandmoralsupport.ThankyoutothecomputerscienceteacherswhotaughtAPComputerScienceduringthepandemicunderverydifficultcircumstances.Thisbookisdedicatedtoyou.
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 5 preview image©Copyright2022,2020,2018,2015,2013,2010byKaplan,Inc.,d/b/aBarron’sEducationalSeriesPreviouseditions©Copyright2007underthetitleAPComputerScienceLevelsAandAB,2003underthetitleHowtoPreparefortheAPComputerScienceAdvancedPlacementExamination,JAVAVersion,and2001underthetitleHowtoPreparefortheAPComputerScienceAdvancedPlacementExaminationbyKaplan,Inc.,d/b/aBarron’sEducationalSeries.AllrightsreservedunderInternationalandPan-AmericanCopyrightConventions.Bypaymentoftherequiredfees,youhavebeengrantedthenon-exclusive,non-transferablerighttoaccessandreadthetextofthiseBookonscreen.Nopartofthistextmaybereproduced,transmitted,downloaded,decompiled,reverseengineered,orstoredinorintroducedintoanyinformationstorageandretrievalsystem,inanyformorbyanymeans,whetherelectronicormechanical,nowknownorhereinafterinvented,withouttheexpresswrittenpermissionofthepublisher.PublishedbyKaplan,Inc.,d/b/aBarron’sEducationalSeries1515WCypressCreekRoadFortLauderdale,FL.33309www.barronseduc.comISBN:978150627960210987654321Kaplan,Inc.,d/b/aBarron’sEducationalSeriesprintbooksareavailableatspecialquantitydiscountstouseforsalespromotions,employeepremiums,oreducationalpurposes.Formoreinformationortopurchasebooks,pleasecalltheSimon&Schusterspecialsalesdepartmentat866-506-1949.I~StudyXY
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 6 preview imageAbouttheAuthorRoselynTeukolskyhasanM.S.degreefromCornellUniversity,andhasbeenteachingprogrammingandcomputersciencesince1980.ShehaspublishedarticlesinTheMathematicsTeacherandintheNationalCouncilofTeachersofMathematicsYearbook,andistheauthorofBarron’sACTMathandScienceWorkbookandco-authorofBarron’sSAT1600:AimingforthePerfectScore.TheawardsshehasreceivedincludetheEdythMaySliffeAwardforDistinguishedMathematicsTeachingandtheAlfredKalfusDistinguishedCoachAwardfromtheNewYorkStateMathLeague(NYSML).Forseveralyears,Ms.TeukolskyservedasaReaderforAPComputerScience.Ms.TeukolskystartedteachingAPComputerSciencewhentheprogramminglanguagewasPascal,thefirstlanguageusedfortheexam.Bythetimeshewrotethisbook(in1997),softwaredevelopmentwasmovingtowardobject-orientedprogrammingandthelanguageoftheAPexamhadswitchedtoC++.In2004thelanguageoftheexamchangedyetagain,toJava.Formorethan20years,Ms.Teukolskyhaskeptthisbook—initsmanyincarnations—uptodate.
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 7 preview imageTableofContentsHowtoUseThisBookBarron’sEssential5IntroductionDiagnosticTestSectionISectionITAnswerKey(SectionI)DiagnosticChartAnswerExplanations1TipsforTakingtheExamTipsfortheMultiple-ChoiceSectionWhatIsTested?TimeManagementGuessingTheJavaQuickReferenceAnActivePencilTroubleshooting—What’sWrongwithThisCode?LoopTracingJavaExceptionsMatrixManipulationComparingAlgorithmsMechanicsofAnsweringMultiple-ChoiceQuestionsTipsfortheFree-ResponseSectionWhatIstheFormat?WhatIsTested?WhatTypesofQuestionsMightBeAsked?SkillFocusinFree-ResponseQuestionsTheJavaQuickReferenceTimeManagementGradingtheFree-ResponseQuestionsWritingCodeMaximizingYourScore
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 8 preview image2IntroductoryJavaLanguageFeaturesPackagesandClassesJavadocCommentsTypesandIdentifiersIdentifiersBuilt-inTypesStorageofNumbersHexadecimalandOctalNumbersFinalVariablesOperatorsArithmeticOperatorsRelationalOperatorsLogicalOperatorsAssignmentOperatorsIncrementandDecrementOperatorsOperatorPrecedenceInput/OutputInputOutputEscapeSequencesControlStructuresDecision-MakingControlStructuresIterationErrorsandExceptionsMultiple-ChoiceQuestionsonIntroductoryJavaLanguageConceptsAnswerKeyAnswerExplanations3ClassesandObjectsObjectsClassesPublic,Private,andStaticMethodsHeadersTypesofMethodsMethodOverloadingScopeThethisKeywordReferencesReferencevs.PrimitiveDataTypesTheNullReferenceMethodParametersMultiple-ChoiceQuestionsonClassesandObjectsAnswerKeyAnswerExplanations
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 9 preview image4InheritanceandPolymorphismInheritanceSuperclassandSubclassInheritanceHierarchyImplementingSubclassesDeclaringSubclassObjectsPolymorphismDynamicBinding(LateBinding)UsingsuperinaSubclassTypeCompatibilityDowncastingAbstractClassesInterfacesMultiple-ChoiceQuestionsonInheritanceandPolymorphismAnswerKeyAnswerExplanations5SomeStandardClassesTheobjectClassTheUniversalSuperclassMethodsinobjectThestringClassStringObjectsConstructingStringObjectsTheConcatenationOperatorComparisonofstringObjectsOtherstringMethodsSpecialEmphasis‘WrapperClassesTheIntegerClassTheDoubleClassAutoboxingandUnboxingTheMathClassRandomNumbersMultiple-ChoiceQuestionsonSomeStandardClassesAnswerKeyAnswerExplanations6ProgramDesignandAnalysisSoftwareDevelopmentProgramSpecificationProgramDesignProgramImplementationTestingandDebuggingProgramMaintenanceObject-OrientedProgramDesign
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 10 preview imageIdentifyingClassesIdentifyingBehaviorsDeterminingRelationshipsBetweenClassesUMLDiagramsImplementingClassesImplementingMethodsVocabularySummaryProgramAnalysisProgramCorrectnessAssertionsEfficiencyMultiple-ChoiceQuestionsonProgramDesignandAnalysisAnswerKeyAnswerExplanations7ArraysandArrayListsOne-DimensionalArraysInitializationLengthofArrayTraversingaOne-DimensionalArrayArraysasParametersArrayVariablesinaClassArrayofClassObjectsAnalyzingArrayAlgorithmsArrayListsTheArrayListClassTheMethodsofArrayList<E>AutoboxingandUnboxingUsingArrayList<E>Two-DimensionalArraysDeclarationsMatrixasArrayofRowArraysProcessingaTwo-DimensionalArrayTwo-DimensionalArrayasParameterMultiple-ChoiceQuestionsonArraysandArrayListsAnswerKeyAnswerExplanations8RecursionRecursiveMethodsGeneralFormofSimpleRecursiveMethods‘WritingRecursiveMethodsAnalysisofRecursiveMethodsSortingAlgorithmsThatUseRecursionRecursiveHelperMethodsRecursioninTwo-DimensionalGrids
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 11 preview imageSampleFree-ResponseQuestion1SampleFree-ResponseQuestion2Multiple-ChoiceQuestionsonRecursionAnswerKeyAnswerExplanations9SortingandSearchingSorts:SelectionandInsertionSortsSelectionSortInsertionSortRecursiveSorts:MergeSortandQuicksortMergeSortQuicksortSortingAlgorithmsinJavaSequentialSearchBinarySearchAnalysisofBinarySearchMultiple-ChoiceQuestionsonSortingandSearchingAnswerKeyAnswerExplanationsPRACTICETESTSPracticeTest1SectionISectionITAnswerKey(SectionI)AnswerExplanationsPracticeTest2SectionISectionITAnswerKey(SectionI)AnswerExplanationsAppendix:GlossaryofUsefulComputerTerms
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 12 preview image.HowtoUseThisBookIntroductionTheintroductiontothisbookprovidesanoverviewoftheformatandcontentoftheAPComputerScienceAexam.DiagnosticTestThefull-lengthpracticetestatthestartofthisbookservesasadiagnostictest.Itisaccompaniedbyadiagnosticchartthatidentifiesthetopicrelatedtoeachmultiple-choicequestionandthepageinthereviewchaptersthatdiscussesthattopic.Detailedanswerexplanationsareprovidedforallmultiple-choicequestions,andcompletesolutionsandscoringrubricsaresuppliedforthefree-responsequestions.Youcanalsousethistestasapracticetestonceyouhavecompletedyourreview.ReviewandPracticeChapter1featurestipsandadvicefortacklingthemultiple-choiceandfree-responsequestionsontheexam.Chapters2through9eachcontainacomprehensivereviewofatopic,multiple-choicepracticequestionsthattestyourunderstandingofthattopic,anddetailedanswerexplanationsforallquestions.ThesequestionsaredesignedtohelpyoureviewpartsoftheJavasubsetyoushouldknowfortestday.AfewquestionsarenottypicalAPexamquestions—forexample,questionsthattestlow-leveldetailsofsyntax.Mostofthesepracticequestions,however,andallthemultiple-choicequestionsinthediagnosticandpracticetestsarerepresentativeofactualexamquestions.Notethatseveralgroupsofthesepracticequestionsareprecededbyasinglepieceofcodetowhichthequestionsrefer.BeawarethattheAPexamwillusuallyrestrictthenumberofquestionspercodeexampletotwo.
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 13 preview imageInboththetextandquestions/explanations,aspecialcodefontisusedforpartsofthetextthatareJavacode.//ThisisanexampleofcodefontAdifferentfontisusedforpseudocode.<Hereispseudocodefont.>AllfeaturesofJavathatarelikelytobetestedontheAPexamarecoveredinthisbook,includingarrays,two-dimensionalarrays,strings,listprocessing,andinheritanceinobject-orientedprogramming.AsmallnumberofoptionaltopicsthatarenotpartoftheAPJavasubsetareincludedbecausetheyareusefulforthefree-responsequestions.Sectionsinthereviewtextandmultiple-choicequestionsthatareoptionaltopicsareclearlymarkedassuch.PracticeTestsThisbookconcludeswithtwofull-lengthpracticeteststhatmirrortheactualexaminformatandcontent.Eachtestisfollowedbyananswerkeyanddetailedexplanationsforthemultiple-choicequestionsandcompletesolutionsandscoringrubricsforthefree-responsequestions.Onceyoucompleteatest,youmaywishtocalculateyourapproximateAPscore.Usethescoringworksheetprovidedonthebackoftheanswersheet.OnlinePracticeTherearethreeadditionalfull-lengthpracticetestsonline.Youmaytakethesetestsinpractice(untimed)modeorintimedmode.Allmultiple-choicequestionsareaccompaniedbydetailedanswerexplanations,andtherearecompletesolutionsandscoringrubricsforthefree-responsequestions.+StudyXxy
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 14 preview imageForStudentsThisbookisdesignedtoprepareyoufortheAPComputerScienceAexam.ItwouldtypicallybeuseduponcompletionofanAPcourse.However,sinceitcontainsacompletesummaryofallexamtopics,youcanuseitforself-studythroughouttheschoolyear,alongwithasuitabletextbook.Youcanalsousethisbookasasupplementtoafirst-semestercollegecoursewhereJavaistheprogramminglanguage.BeforetheAPexam,studythetipsinChapter1andattemptasmanyofthepracticetestsasyoucan.Besuretocheckouttheappendixattheendofthebook,whichprovidesaglossaryofusefulcomputertermsthatoccasionallyappearontheexam.Onefinalhint:trythequestionsbeforeyoupeekattheanswers.Bestofluckonexamday!ForTeachersThisbookcoversthecourseandexamformatoutlinedinthelatestAPComputerScienceACourseandExamDescription.Itprovidesareviewofobject-orientedprogramming,algorithmanalysis,anddatastructures.Youcanusethisbookasaresourceinahighschoolclassoranintroductorycollegecourse,oryoucanassignpracticequestionsashomeworkortestmaterial.
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 15 preview imageBARRON’SESSENTIAL5Asyoureviewthecontentinthisbooktoworktowardearningthat5onyourAPCOMPUTERSCIENCEAexam,herearefivethingsthatyouMUSTknowaboveeverythingelse:1Learnthebasics.ThesearepresentedinChapter2.EveryAPexamquestionusesthesefeatures.Ontheexam,free-responseQuestion1willlikelyfocusoncontrolstructures.Befamiliarwith:mIdentifiers:RulesfornamingvariablesandmethodsmTypes:Primitiveorbuilt-intypesversusreferencetypesmOperators:Arithmetic,relational,logical,assignment,andincrementanddecrementmControlstructures:conditionalswithifandif..else,forloops,enhancedforloops,whileloops,andnestedloops2Understandstrings.ThestringclassisfeaturednearthebeginningofChapter5.Youmustbeabletomanipulatestrings,whicharesprinkledthroughoutthemultiple-choicesectionoftheAPexam,andwillbefeaturedinatleastonefree-responsequestion.Befamiliarwith:mConstructingStringobjectsmConcatenationofstringsusingthe+operatormComparisonofstringsmstringmethodslength,substring(start),substring(start,end),index0f(str)3Studyobjects,classes,andinheritance.ThesearediscussedinChapters3and4.Ontheexam,free-responseQuestion2willinvolveclasses.Youmayhavetowriteyourownclassorsubclass.Befamiliarwith:mMethods:Constructors,accessors,mutators,andoverloadedmethodsmSuperclassesandsubclasses:InheritancemPolymorphism:Dynamicbinding,overriddenmethods,andthekeywordsuper+StudyXxy
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AP Computer Science a Premium, 2022-2023 (2022-2023) - Page 16 preview image4Knowlistsandarrays.ThesearefoundinChapter7.Thischapter,whichfeaturesone-dimensionalarrays,two-dimensionalarrays,andArrayLists,iscrucialfortheAPexam.Youmustlearntomanipulatealist:searchforagivenitem,deleteanitem,insertanitem.Ontheexam,free-responseQuestion3willinvolveanarrayorArrayList.Free-responseQuestion4willinvolvea2Darray.Befamiliarwith:®One-dimensionalarraysmArrayList,andthemethodssize,add,get,set,andremovemTwo-dimensionalarrays.Youmustlearntoaccesstheelementsusing-Row-columntraversal-Standardandenhancedforloops-Traversalofmajorandminordiagonals-Row-by-rowarrayprocessing5Understandsortingandsearching.TherequiredsortingandsearchingalgorithmsarediscussedindetailinChapter9.Withoutmemorizingcode,youmustknowhowthesealgorithmswork.Questionsaboutsortingandsearchingoftencomeupinthemultiple-choicesectionoftheAPexam,andmaybefeaturedinfree-responsequestions.Befamiliarwith:mSelectionsort®m[InsertionsortmMergesortmSequentialsearchmBinarysearch+StudyXy
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