Comp 110/401 Appendix: Installing and Using Eclipse

1. Comp 110/401 Appendix: Installing and Using Eclipse Instructor: Prasun Dewan (FB 150, dewan@unc.edu)

2. Scope: Basics and Beyond Basic use: CS 1 Beyond basic use: CS2

3. Download from www.eclipse.org

4. Extract All

5. Select Destination Folder

6. Create some kind of Shortcut for Eclipse.exe

7. Run Eclipse.exe

8. Specify Projects Directory

9. Remove Welcome Tab if it Appears

10. Add a New Java Project

11. Enter Project Name

12. Switch to Java Perspective (May get this message)

13. Empty Project Created

14. Add a Package to Selected Project Select project and File Package

15. Enter Package Name

16. Empty Package in Non Empty Project

17. Add a Class Select project and File Class

18. Name the Class

19. Empty Class in Non Empty Package

20. Edit the File (Copy and Paste Code) packagewarmup; importjava.io.BufferedReader; importjava.io.InputStreamReader; publicclassAGreeter { staticBufferedReaderinputStream = newBufferedReader(newInputStreamReader(System.in)); publicstatic voidmain(String[] args) { System.out.println("Hello World"); if(args.length > 0) { System.out.println(args[0]); } try{ System.out.println(inputStream.readLine()); } catch (Exception e) { System.out.println("Could not read line"); e.printStackTrace(); } } } Copy and paste code from:

21. Save (and Compile) the File FileSave or CTRL+S

22. Workspace, Project, Source Package  Folder Project Source Package Workspace Class Source

23. Workspace, Project, Binary Package  Folder Project Binary Package Workspace Class Object (Binary) Code

24. Execute the Main Method on Selected Class Right MenuDebug As Java Application Can also select Run but Debug is more defensive

25. View Output in Console Window

26. Provide Input in Console Window

27. The Output after Enter

28. Supply User Argument: Right MenuDebug As Debug Configuration

29. Select Main Class in Configuration

30. Specify and Apply Argument in Argument Tab and Press Debug Argument must be in quotes. Args[0] = “Ca Va” Without quotes Java will make each word a separate argument (args[0] = “Ca”, args[1] = “Va”

31. Execute with Supplied Arg

32. Arg Printed, Program, Still Running, Waiting for Input Press Button available in both Debug and Java Perspective, only of them is active

33. Terminated Program Inactive button

34. Debug Last Main Launched: F11 No need to select a main class

35. Closing a Window perhaps accidentally Hide Console

36. Vanished Console

37. WindowReset Perspective

38. WindowShow View Can selectively remove and add sub-windows/views

39. Target Basic use  Beyond basic use

40. Create A Project from Existing Code Source Code of Class Examples Click on Zipper Directory Link in SlideShow Mode Unzip the zipped directory Make a Java project out of it by following the steps described

41. Create a Project out of Existing Code: FileNewJava Project

42. Uncheck Default Location Box Uncheck

43. Enter Location and Name

44. New Project Created But it will have errors because of missing ObjectEditor library

45. Library Location on the Web Downloads Click on the latest version to download the jar (same as zip) and do not unzip/unjar it

46. Download Library to Local Computer Do not unzip/unjar it

47. Select Project, and ProjectProperties Must do this for each project!

48. Select Build Path, Add External Jar

49. Select Saved Jar

50. Press Done to Commit