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How to make a project with a main in a .class file? [message #984652]

Wed, 14 November 2012 21:50

d grin

Messages: 12
Registered: June 2012

Junior Member

I have a project for school in which the professor has given me sos.class which contains a main function. No source to that file has been given. I need to write my own java file that works with it. How do I make an eclipse project that will be able to run the main in the .class file? Thanks.

Edit: I would also prefer that the class and source file be in the same file.

[Updated on: Wed, 14 November 2012 21:57]

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Re: How to make a project with a main in a .class file? [message #985514 is a reply to message #984652]

Thu, 15 November 2012 13:02

Dani Megert

Messages: 3802
Registered: July 2009

Senior Member

On 14.11.2012 22:50, d grin wrote:
> I have a project for school in which the professor has given me
> sos.class which contains a main function. No source to that file has
> been given. I need to write my own java file that works with it. How
> do I make an eclipse project that will be able to run the main in the
> .class file? Thanks.

Create a Java project, then add a folder and put it on the Java build
path (as Class Folder). You can then add the class file into that folder
and run it.

Dani

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Re: How to make a project with a main in a .class file? [message #985656 is a reply to message #985514]

Thu, 15 November 2012 15:52

d grin

Messages: 12
Registered: June 2012

Junior Member

How do I add a folder to the java build path?

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Re: How to make a project with a main in a .class file? [message #985663 is a reply to message #985656]

Thu, 15 November 2012 16:09

Russell Bateman

Messages: 3798
Registered: July 2009
Location: Provo, Utah, USA

Senior Member

On 11/15/2012 8:52 AM, d grin wrote:
> How do I add a folder to the java build path?

Assuming you already have a Java project, just create a new folder
underneath the one (already there) named src.

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Re: How to make a project with a main in a .class file? [message #985673 is a reply to message #985663]

Thu, 15 November 2012 16:24

d grin

Messages: 12
Registered: June 2012

Junior Member

I added the folder to the build path using this guide - http://pic.dhe.ibm.com/infocenter/wasinfo/v6r0/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftasks-112.htm

So now my java file sees the .class files. However when I try to run it eclipse says 'selection does not contain a main type.' I know for a fact that sos.class has a main since it works from command line. How do I get eclipse to search for main in the sos.class file?

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Re: How to make a project with a main in a .class file? [message #986710 is a reply to message #985673]

Wed, 21 November 2012 11:59

Dani Megert

Messages: 3802
Registered: July 2009

Senior Member

On 15.11.2012 17:24, d grin wrote:
> I added the folder to the build path using this guide -
> http://pic.dhe.ibm.com/infocenter/wasinfo/v6r0/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftasks-112.htm
>
> So now my java file sees the .class files. However when I try to run
> it eclipse says 'selection does not contain a main type.' I know for a
> fact that sos.class has a main since it works from command line. How
> do I get eclipse to search for main in the sos.class file?
Make sure that the sos.class is selected when you launch.

Dani

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