Eclipse

1
Eclipse

• Project

2
Installing

• Visit http//www.eclipse.org to download a copy
  for your home computer
• Get Release version 3.0 (or later)
• Eclipse is available on any of the machines in
  the CS Lab
• Type eclipse to run on queen
• This is currently an older version, but much of
  the functionality is the same
• Note This demo was done using Eclipse version
  3.0 on Windows XP

3
Java Project

• Menu FilegtNewgtProject
• Select Java Project and click Next
• Name it HelloWorlduserid and click Finish
• The jar files appear in the view
• Switch perspectives to Java if asked
• You can see two perspectives now on top-right of
  screen
• Java
• Resources
• Switch to Resource perspective
• You will see .project and .classpath files in
  your project

4
The Java Perspective

• Switch to the Java Perspective
• Check out these options in the perspective
• Source Menu
• Refactor Menu
• Debug toolbar icon
• Run
• New Java Project
• New Java Package

5
Create a New Class

• Creating a new class
• Right-click on HelloWorld in the Package Explorer
  and select Newgt Class
• Make sure the Source Folder is Hello World
• Leave Package blank.
• Leave Enclosing type unchecked.
• Enter HeIloWorlduserid in the Name field.

6
Creating a New Class

• Make sure public is checked, abstract and final
  are unchecked.
• Leave Superclass as java.lang.Object
• Leave interfaces blank.
• Make sure public static void main(String args)
  is checked.
• Leave the other two unchecked.
• Click Finish

7

• Notice how you can add code templates to match
  your own coding styles, etc.

8
Write the code for the new class

• Enter the following source code as your main()
  method.
• System.out.println("Hello World!")
• Save
• Review the source and the generated class

9
Running and Debugging

• Select HelloWorld.java if it is not already
  selected.
• From the main tool bar, select the Run tool's
  dropdown.
• Select Run ... Run As Java Application
• Click on the Console window at the bottom to view
  the results of your application

10
Create HelloWorld2

• Overview
• You'll initialize a counter that you'll use to
  control a loop
• Run it without debugging
• Later, using the debugger, go in and modify the
  counter to make the program run differently

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HelloWorld2

• Copy HelloWorld source code
• Create a new class called HelloWorld2
• Paste the source code (make sure you rename the
  class HelloWorld to HelloWorld2
• Modify the main method with the following source
• int count 3
• for (int i 0 i lt count i)
• System.out.println("Hello" i)
• Save

12
HelloWorld2
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Break-pointing a program

• Right-click on the debug column to the left of
  the for loop.
• Select Toggle Breakpoint
• View the Debug Perspective
• Click RungtDebug AsgtJava Application
• Double-click on the count variable in the
  Variables view
• Enter the value 5 and click OK
• Click the Resume tool to continue execution of
  the program

14
CVS

• Switch back to the Resource perspective
• Click WindowgtOpen PerspectivegtCVS Repository
  Exploring perspective
• Right click on the Repository list and Select
  NewgtRepository Location
• To set up queen for personal CVS
• ssh into queen
• Create a cvsroot directory in your home directory
• Run cvs d /home/xxx/cvsroot init
• Enter your CVS server information in Eclipse
• connect to queen via extssh using
• Host queen.cs.drexel.edu
• Repository path /home/xxx/cvsroot
• Your userid and password
• Say OK to any dialog boxes for new connections

15
CVS

• Switch back to the Resource perspective
• Right-click on your project, Select TeamgtShare
  Project
• Click Use existing repository location and click
  Next
• Make sure your queen account is selected
• Use the project name as the module name and Click
  Next
• Files will be added to repository, click Finish
• Commit any other files and changes
• Make sure you add a comment to commit
• Files will be committed

16

• Notice changes to file display
• If you right-click on project or files and select
  Team, you will now have the ability to
  synchronize, commit, etc. with your CVS repository

17
References

• http//www.eclipse.org