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Using Run [message #773788]

Mon, 02 January 2012 14:40

Francisco Queirós

Messages: 4
Registered: January 2012

Junior Member

Hello, Eclipse Community.

I am here, hoping to get some help on a matter.

To start off, I'm sort of a noob looking to learn Java and for that, I'm using Eclipse.

I've encountered something that is *really* bugging me. The problem is that every time I try to run a .class file, I click run, but then, Eclipse tries to run something that isn't selected, or that doesn't even exist!

I've posted a picture, showing what I mean. In the picture I got my helloWorld.java file selected. I clicked to run it. But for some reason, Eclipse wants to run the whole project. And I really don't know how to change that. I really need some help here.

index.php/fa/6608/0/

P.S.: I know that I already posted this on Newcomers forums, but I wasn't getting any answers, so, I decided to post here. I tried to just "forward" the post over here, but the forums doesn't let me use links yet. Sorry.

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Re: Using Run [message #773899 is a reply to message #773788]

Mon, 02 January 2012 21:01

Rylan Cottrell

Messages: 5
Registered: January 2012
Location: Calgary, Alberta

Junior Member

Just right click on the java file and choose 'run as' select Java Application and it should default that execution for future clicks of the run button. Another tip is your classes should always start with a capital letter to follow the Java standard coding convention (java.sun.com/docs/codeconv/html/CodeConventions.doc.html#16712).

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Re: Using Run [message #773908 is a reply to message #773899]

Mon, 02 January 2012 21:25

Francisco Queirós

Messages: 4
Registered: January 2012

Junior Member

I've tried what you suggested, but that option doesn't seem to exist...

This next screenshot shows what I mean:

index.php/fa/6609/0/

Also, I tried looking at the "Run Configurations", didn't really understand how it worked.

Also, I've applied the tip you gave me. I was using lowercase class names because I had an odd memory of Eclipse telling that uppercase class names are not advised. But apparently, it's the other way around. Embarrassed

Attachment: Eclipse.png
(Size: 215.81KB, Downloaded 242 times)

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Re: Using Run [message #773921 is a reply to message #773908]

Mon, 02 January 2012 22:07

David Wegener

Messages: 1445
Registered: July 2009

Senior Member

On 01/02/2012 03:25 PM, Francisco Queirós wrote:
> I've tried what you suggested, but that option doesn't seem to exist...
>
> This next screenshot shows what I mean:
>
>
>
> Also, I tried looking at the "Run Configurations", didn't really understand how it worked.
>
> Also, I've applied the tip you gave me. I was using lowercase class names because I had an odd memory of Eclipse telling that uppercase class names are not advised. But apparently, it's the other way around. :blush:
The class that you have selected is not a runnable class. Your main
method has to take a string array.

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Re: Using Run [message #773946 is a reply to message #773921]

Mon, 02 January 2012 23:53

Francisco Queirós

Messages: 4
Registered: January 2012

Junior Member

You sir, made my day.

I am following a set of tutorials, and on the tutorial it has as argument for the main method "String args[]". I was wondering what it was for... and I didn't write it. Now I know what it is for... Embarrassed

Thanks, once again.

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Re: Using Run [message #774013 is a reply to message #773946]

Tue, 03 January 2012 04:56

malika goyal

Messages: 1
Registered: January 2012

Junior Member

Hi,

You can just run the it as a java application by choosing "run" from the menu bar or like you have done right in the java
application, you have two options "Java Applet" and "Java Application", you choose "Java application" to run the program.

Thanks & Regards,
Malika
igimarketcare.com

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