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Using 3rd party .jar in my RCP app [message #769808]

Thu, 22 December 2011 17:49

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

I have several 3rd party .jar files I want to use in my RCP app.
I've done a bunch of searches here, but all the help either has invalid links, or the instructions are so old they don't correspond to the current Eclipse environment.

When developing the code, I added the 3rd party .jar files to the classpath, and that works for compile and junit tests.

When I try to run the Product, I get NoClassDefFoundError's for all the 3rd party stuff.

So, just what are the steps needed to have the 3rd party jars included?

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Re: Using 3rd party .jar in my RCP app [message #769815 is a reply to message #769808]

Thu, 22 December 2011 18:10

Federico Sellanes

Messages: 71
Registered: November 2011

Member

Hi, i had this issue a few weeks ago.

In the plugin.xml of your product, go to "build" panel, and in the bottom at "extra classpath entries" add the jars

Tell me if you have problems.

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Re: Using 3rd party .jar in my RCP app [message #769823 is a reply to message #769815]

Thu, 22 December 2011 18:32

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

So, I created a lib folder in my project, copied the .jar files into it, and added them as "extra classpath entries".
Still fails with NoClassDefFoundError.
I checked, and the class it's complaining about is in one of the .jars.

Is there something else I should do?

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Re: Using 3rd party .jar in my RCP app [message #769830 is a reply to message #769823]

Thu, 22 December 2011 18:54

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

Okay, figured it out.
I also had to go to the "Runtime" tab of the application, and add them to the "Classpath" there.

Well, at least that got me past that problem.
Now, one of my app utility classes can't be found...

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Re: Using 3rd party .jar in my RCP app [message #769836 is a reply to message #769830]

Thu, 22 December 2011 19:05

Federico Sellanes

Messages: 71
Registered: November 2011

Member

Yes, sorry what i did :

1-Create another plugin for the jars :
2-add and import the jars to the build path.
3-Now in the plugin.xml of my product plugin, in the dependencies tab, i added the "jars plugin"

This work for me, sorry my last post is wrong

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Re: Using 3rd party .jar in my RCP app [message #769837 is a reply to message #769830]

Thu, 22 December 2011 19:05

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

Ooooh, this is weird.
I commented out the 2 lines of code that used the class that couldn't be found.
Project-Clean
run eclipse application
Still fails with that class not being found, and the exception starts with the line of code that was commented out!
It seems to be using an old version of the code for some reason???
Huh?

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Re: Using 3rd party .jar in my RCP app [message #769840 is a reply to message #769837]

Thu, 22 December 2011 19:27

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

PEBKAC error
I hadn't realized that the .log file was just appended to every time you ran, so when I viewed it with the editor, it was always showing the OLDEST error.
I had to scroll WAY down to find the current error, which I can fix.
sigh.

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Re: Using 3rd party .jar in my RCP app [message #769845 is a reply to message #769840]

Thu, 22 December 2011 19:33

Federico Sellanes

Messages: 71
Registered: November 2011

Member

Sorry, i provided you the wrong information :

This is your solution :

http://www.vogella.de/articles/EclipseJarToPlugin/article.html

Remember uncheck : Unzip the jar archives into the project

[Updated on: Thu, 22 December 2011 19:34]

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Re: Using 3rd party .jar in my RCP app [message #769855 is a reply to message #769845]

Thu, 22 December 2011 19:41

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

So, WHY do I need to do all that?
Creating a lib dir, moving the .jar files into it, and adding them in the 2 places in the Manifest seems to be working.

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