Download First steps with Eclipse

Eclipse
Project
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
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Note: This demo was done using Eclipse version 3.0 on Windows
XP
Java Project…
• Menu File>New>Project
• Select Java Project and click Next
• Name it HelloWorld#userid# 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
The Java Perspective
• Switch to the Java Perspective
• Check out these options in the
perspective:
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Source Menu
Refactor Menu
Debug toolbar icon
Run
New Java Project
New Java Package
Create a New Class
• Creating a new class
– Right-click on HelloWorld in the
Package Explorer and select New>
Class
– Make sure the Source Folder is Hello
World
– Leave Package blank.
– Leave Enclosing type unchecked.
– Enter HeIloWorld#userid# in the
Name field.
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
•Notice how you can add code templates to match your own coding
styles, etc.
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
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
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
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 < count; i++)
{ System.out.println("Hello" + i); }
• Save
HelloWorld2
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 Run>Debug As>Java 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
CVS
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Switch back to the Resource perspective
Click Window>Open Perspective>CVS Repository
Exploring perspective
Right click on the Repository list and Select
New>Repository Location
To set up queen for personal CVS:
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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
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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
CVS
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Switch back to the Resource perspective
Right-click on your project, Select
Team>Share Project
Click Use existing repository location and
click Next
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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
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Make sure your queen account is selected
Make sure you add a comment to commit
Files will be committed
•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
References
• http://www.eclipse.org