Java IDE.ppt

JavaDevelopmentTool ModuleRoadMap BuildingandRunningJavaClassesDevelopingJavaapplicationsProjects packages classesBrowsingJavacodeSearchingJavacodeOrganizingJavacodeUsingCodeAssistRunningJavaapplicationsScrapbook JavaDevelopmentTooling JDT Eclipse sJavaDevelopmentEnvironmentisoftenreferredtoasJDT JavaDevelopmentToolingUsingtheJDTyoucandofollowingwiththeJavaprograms WriteCompileTestDebug Perspectives WhendevelopingJavacodecommonlyusedperspectivesare JavaPerspectiveDesignedforworkingwithJavaprojectsJavaBrowsingPerspectiveDesignedforbrowsingstructureofJavaprojectsJavaTypeHierarchyPerspectiveDesignedforexploringtypehierarchyDebugPerspectiveDesignedfordebuggingJavaprograms JavaPerspective Contains EditorareaPackageExplorerViewHierarchyViewOutlineViewTasksView JavaBrowsingPerspective Contains EditorareaProjectsViewPackagesViewTypesViewMembersView JavaTypeHierarchyPerspective ContainseditorareaandHierarchyView NewProjectPreferences YoucansetglobalpreferencesforaprojectSelectWindow PreferencestogetPreferencesViewGoodideatoseparateyourJavafilesintosourceandcompileddirectories srcandbin ThisactiononlyneedstobedoneonceDoneforallsubsequentprojects CreatingJavaProject Projectusedtoorganizeresources source class icons foraprojectTocreateJavaproject SelectWindow New Project fromthemenuTheNewProjectwizardcomesupSelectJava JavaProjectClickNext NewProjectWizard SpecifyProjectNameClickNext JavaSettings SpecifyJavasettingsOutputfolder wherecompiledfileswillbestored ExternaljarfilesprojectdependsonClassesfromotherprojectsthatarereferencedintheprojectClickFinish ProjectProperties YoucanchangetheJavabuildpathatanytimeChoosePropertiesfromthecontextmenuontheproject CreatingPackages PackagecontainsJavaclassfilesTocreateapackageforaproject SelecttheprojectChooseNew PackagefromthecontextmenuSpecifypackagenameClickFinish CreatingClasses Tocreateaclassinapackage SelectthepackageChooseNew ClassfromthecontextmenuTheClasswizardcomesupSpecifyclassdetailsClickFinish UsingCodeAssist Whenactivated codeassistopensalistofavailablecodecompletionsCodeAssistactivatesbyCrtl SpaceActivatesautomaticallywhenamessageneedstobesenttoanobject afterthedotistyped UsingQuickFix UsefulifJavacompilershowserrorsGivesoptionsforfixingtheerrorsActivatedthroughEdit QuickFixmenuoption Errorindication SearchingforJavaClasses WhendevelopingJavaapplicationagoodsearchmechanismisveryimportantYouoftensearchforclass methoddeclarations andreferencesItisimportanttobeabletofindthingsquicklyEclipseJavaSearchmechanismisveryextensiveItallowsyoutosearchfor Types methods constructors packages andfieldsDeclarations Implementers ReferencesInthescopeofWorkspace WorkingSet orSelectedResources OrganizingJavaCode EclipsecomeswithextensivesupportfororganizingandrefactoringJavacodeItispossibleto GenerategettersandsettersforthefieldsOrganizemissingimportstatementsMovefields methods classesRenamemethods classes packages GeneratingGettersandSetters AvailableforcreatinggetandsetmethodsonthefieldsItsupportsencapsulationActivatedbychoosingSource GenerateGetterandSetterfromtheeditor scontextmenu Refactoring AvailablefromtheRefactorcontextmenuoptionintheeditorHelpswithrefactoringJavacodeAllowsfor RenamingMethods fields packages projects parameters orlocalvariablesChangingofmethodsignaturePullupafieldormethod intosuperclass Pushdownafieldormethod intosubclass Encapsulatefield generategetterandsetter Extractmethod localvariable orconstantfromanexpression RunningJavaClasses ToRunJavaapplicationChooseRun Run fromthemenu ConsoleView RepresentsstandardJavaconsoleOpensbydefaultwhenstandardJavaoutputisusedCanalsobeopenfromWindow ShowViewmenu System out println HelloWorld Scrapbook AllowsforwritingandexecutingofJavacodeVeryusefulforquicktestofJavacodethatyouwriteTheJavacodeintheScrapbookcanbe DisplayedasastringwhenevaluatedInspectedwhenevaluatedOpensanInspectorviewwhereyoucanseereturningobjectfromevaluationandallcontainingfieldsExecuted Scrapbook ItiscreatedbyselectingaprojectandchoosingNew ScrapbookPagefromthePackageExplorer scontextmenuandthenenteringthenameofthepageYourscrapbookpagewillbecomearesourceinyourproject Scrapbook ToopenthescrapbookpagejustclickontheresourceItopensuplikeaJavasourcefileeditorTypeJavacodeandselectthecontextmenutoDisplayorInspect Scrapbook ClassnamesmustbefullyqualifiedinwhatyoutypeSetimportstomakelifeeasierThinkofyourscrapbookasapagethatEclipsewilltakethesourceyoutype wrapitinaclasswithyoursourceinthemainmenu thencompileandexecute Summary Youhavelearned Howtocreateprojects packagesandclassesHowtobrowseJavacodeandsea