Eclipse workshop presentation
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Eclipse workshop presentation made at Técnico Lisboa on January 2014, at the invitation of NEIIST - the Computer Science and Engineering students association

Eclipse workshop presentation made at Técnico Lisboa on January 2014, at the invitation of NEIIST - the Computer Science and Engineering students association

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Eclipse workshop presentation Presentation Transcript

  • 1. Eclipse workshop Jan. 2014
  • 2. • Miguel Pardal – LEIC 2000 – Lecturer at Técnico Lisboa – PhD Student – http://web.tecnico.ulisboa.pt/miguel.pardal – Eclipse user since 2005 – Conditional fan 
  • 3. Goal • • • • Learn the good Avoid the bad Become a better developer Enjoy life!
  • 4. Outline • Introduction – Concepts – Techniques • Hands-on
  • 5. History • Eclipse started out as proprietary technology – Object Technology International (OTI) – IBM’s goals: • Reduce incompatible environments • Increase reuse of common components • Evolved from IBM VisualAge for Smalltalk™ and for Java™ – Monolithic http://wiki.eclipse.org/FAQ_Where_did_Eclipse_come_from%3F
  • 6. History • The Eclipse open source project was announced in November 2001 by a group of companies that formed the initial Eclipse Consortium – Eclipse Foundation since 2004 • Commercial-friendly open source license – Wider audience and ecosystem • Eclipse was designed from the ground up as an integration platform for development tools – – – – Everything in Eclipse is a plug-in Uses SWT to bind to local platform GUI OSGi component model since 3.0 Annual Simultaneous Release (…, Indigo, Juno, Kepler, …)
  • 7. Install • Download • Unzip • Run • All configurations are file-based – workspace folder • Settings • Projects – Project metadata files • .project • .classpath
  • 8. CONCEPTS
  • 9. Workbench • Eclipse’s main window – Menus and toolbars – Views, editors, perspectives
  • 10. View • A view is a window that lets you examine something – Navigate a list or hierarchy of information – Display properties for the active editor • Modifications made in a view are saved immediately.
  • 11. Editor • Editors are used to edit or browse a resource – Rectangular area in the Workbench window – Visual presentation might be text or a diagram. – Editors are launched by clicking on a resource in a view – Modifications made in an editor follow an open-save-close lifecycle model • * indicates unsaved data
  • 12. Perspective • A perspective is a set of views, editors, and toolbars, along with their arrangement within the Workbench window. • As you perform a task, you may rearrange windows, new views, and so on. – Saved under the current perspective. – Next time, switch to perspective – Within a window, each perspective may have a different set of views but all perspectives share the same set of editors. • Built-in Java or Debug perspectives
  • 13. Java Project
  • 14. Project properties
  • 15. Project properties
  • 16. Auto-complete • From the current context – project, class, method, etc – what could complete this? – CTRL+space
  • 17. Auto-build • Compilation is automatic in Eclipse • Blessing – Sting s = “Eclipse”; • Curse – String s = “Ecli
  • 18. TECHNIQUES
  • 19. Factoring • Create the application domain • Create class – Members – Methods • Generate methods – Getters Setters – toString
  • 20. Create
  • 21. Create class
  • 22. Source menu
  • 23. Testing • JUnit Class • JUnit View
  • 24. Refactoring • Refactoring is a process of software source code transformation – Should be performed when the code is working and all of its tests are passing – Does not involve rewriting or replacing large chunks of code. – Gradual, evolutionary process, intended to “preserve the knowledge embedded in the existing code.” • Examples – Rename – Extract method
  • 25. Refactor menu
  • 26. Quick fix errors
  • 27. Quick fix warnings
  • 28. Implicit class – Write code as if the class already exists • Write code referring to non-existing classes – Use quick-fix to generate class
  • 29. But beware… • Quick-fix can become “quick-bug” • Example – Try-catch and ignore • Worst solution – Try-catch, print and continue • As if nothing has happened… but it did! – Think it through: • Handle exception (try-catch) • Or let someone else do it (throws)
  • 30. Conclusions • Very useful tool • Can increase productivity – Code formatting – Especially in refactoring • But… – Does NOT replace critical thought and design – Can increase the production… of bugs!
  • 31. Looking ahead… • Questions? – Concepts – Techniques Miguel.Pardal@tecnico.ulisboa.pt Thank you Obrigado
  • 32. Shortcuts Top 10
  • 33. 10. Shortcut to shortcuts • Ctrl+Shift+L to see a full list of the currently available key bindings
  • 34. 9. Open file / type • Open file quickly without browsing: Ctrl + Shift + R • Open a type (class / interface): Ctrl + Shift + T
  • 35. 8. Show properties • Select project Alt+Enter • Select type/resource Alt+Enter
  • 36. 7. Maximize editor • Maximizes current editor Ctrl + M • You can also double-click editor tab
  • 37. 6. Editor navigation • Jump to beginning / end of indention. Twice to jump to beginning of line – Home/End • Jump to beginning / jump to end of source – Ctrl+Home/End • Jump one word to the left / one word to the right – Ctrl+Arrow Right/Arrow Left • Jump to previous / jump to next method – Ctrl+Shift+Arrow Down/Arrow Up • Jump to next / jump to previous compiler syntax warning or error – Ctrl+./Ctrl+, • Jump to last location edited – Ctrl+q • Jump to Line Number – Ctrl+l • Hide/show line numbers – Ctrl+F10 and select 'Show Line Numbers'
  • 38. 5. Outline view • Quickly go to class member Ctrl + O
  • 39. 4. Code formatting • Ctrl + Shift + F for code formatting • Ctrl + / for commenting, un commenting lines and blocks
  • 40. 3. Organize imports • Organize imports Ctrl+Shift+O • Go from: – import java.util.* • To: – import java.util.Map; – import java.util.Iterator;
  • 41. 2. Print line • syso Ctrl+space • syse Ctrl+space
  • 42. 1. Guess Exception • throw new NPE Ctrl+space – NullPointerException • throw new IAE Ctrl+space – IllegalArgumentException