WORKING IN ECLIPSE IDE
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So far , I did all my work in command prompt ( shell). I find it easier to do and understand.
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So far , I did all my work in command prompt ( shell). I find it easier to do and understand.
But, I am told by my friends and seniors that it is absolutely necessary to know how to use Eclipse, in any software company job.
So, I began my experiments with Eclipse a few days back. There are many names by which Eclipse is known, such as Indigo, Europa, Ganymede, Helios ,Galileo, Calisto etc. I got confused. I made a google search for ‘eclipse versions and code names’. Wikipedia gives the following information. I think , this may be useful to students like me.
Calisto June 2006 3.2
Europa June 2007 3.3
Ganymede June 2008 3.4
Galileo June 2009 3.5
Helios June 2010 3.6
Indigo June 2011 3.7
As I found many references in articles to Ganymede, I downloaded that software by typting
Eclipse Ganymede Software in Google
I got the site as
I got the site as
There are two versions.
a) Eclipse IDE for Java Developers
b) Eclipse IDE for JEE Developers.
As my work is mostly in J2EE, I downloaded the EE version. It took about 30 minutes.
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The latest version however is Indigo ( 3.7).
So, I will illustrate with Indigo.
Indigo also is about 200 mb .
Indigo also is about 200 mb .
RUNNING A SIMPLE CONSOLE PROGRAM
IN
ECLIPSE (INDIGO)
Initially You will get a welcome screen. Close It.
choose file ->new
we choose ‘other’ and click
we get a lot of options.
I chose ‘java project’ directly .
and clicked ‘next’
Then, I chose ‘class’
Then I got a dialog box asking ‘package name’, ‘class name’, etc . For this project I didn’t used package. so I gave the ‘class name’ only as 'demo'.
There is a question “which method stubs would you like to create”
I chose the first option (ie)
‘public static void main(String[] args)’
then I clicked ‘finish’. So that I got the following page (in which I found automatically created demo class with main method)
Then I included my code.
Then I saved that program
Then I right clicked over that program. So that I got the list
Then I chose ‘Run as’ from the List
So I got another List, From that list I selected “java Application”
The program got run and I got the result in console screen.
( if we close the two windows in the right side of the screen,
we get just three windows.
One in left, another in top right and the third in bottom right.
The left window is the project explorer.
The top-right is edit window.
The bottom-right is the output window ( console).
When we run the program, we get ‘hello’ in the output window ( console).
Actually, console is better name than ‘output window’ because, we can give input in that window.
HOW TO RUN A SERVLET
(USING PACKAGE AND HELPER CLASS
I AM USING ECLIPSE GANEYMEDE J2EE VERSION
I HAVE CONNECTED TO TOMCAT5.
File->new->Dynamic web project
Give name as rms. ( my name)
Then Right Click on your project name which is in top left of the screen. Then You will get the list. I chose ‘package’.
2. so, I got the dialog.
give name to that package.
3. Then creating a hellobean.java in mypack
i. right click on the “mypack” package
ii. go to new->class
Then type your hellobean class code.
4. Then create the helloservlet in mypack .
5. Then give name to helloservlet
6. Then type the helloservlet.java code
7. Then create the helloservlet.htm file
i. right click on your project folder and choose items
8. then give name to html file
9.Type the html code
10. then save all your files and then run the html file
i . right click on the above html file and choose Run asàRun On Server
You will get the input page. Give input and click the ‘submit’ button.
Then you will get the following output.
In the coming lessons, I will show how I ran the other types of programs like AWT Frame, Swing, TCP client-server, UDP client-server, RMI, RMI-IIOP, IDL, JSP, Hibernate console & frame,
Struts1.1 , etc.
I have given the full lesson with screen shots in my website
