How to run a project on Eclipse

Hi,
I have just recently downloaded Eclipse on windows XP. I also grabbed a program online and used Eclipse to debug it. That worked fine until I started making code changes.
I changed the class name and for some reason I cannot run/debug the project anymore. Does anyone know what I need to set to run/debug on Eclipse - Helios. Please help.

Thank you,
Garry

Is it a standalone application ? What is your main class ? Right-click on it, select Run As..., Java Application.

Are you getting a compiler error? A runtime error? What happens if you change the class name back to the original name? Did you change a public class name? If so, did you rename the file that contains it? They must be the same.

I copied and paste the old files with the old file and class names. Opened those files from Eclipse and it worked.

If I used the new files with the new names, it ask me to Run As Ant Build... or Ant Build. I selected one of them but nothing happens.

I am not getting a compile error. It is set up to 'build automatically'.

I tried to right where the main method is but the option "Run As.. Java Application" is not available.

Garry

Gary Ba wrote:Opened those files from Eclipse and it worked.

Did you create a new Java Project ? You need to create a Java project first, and import your files using File/Import.

Oh ok. I finally got it right! I had to create a project. Dough! Completely forgot about it...

Thank you guys,
Gary