Could not load definitions from resources

java eclipse ant rapidminer

12,650

It seems you need to install ant-contrib.

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Author by

Jay Carr

Just working to write some applications in Java that will help with financial reporting. This would probably be easier if I was better at Java... Just need to keep at it I suppose ;-). Any and all advice is welcome.

Updated on June 04, 2022

Comments

Jay Carr almost 2 years
I have a (hopefully) very basic question. I'm very unfamiliar with Ant, I'm just trying to use a build file so I can write some plugins for an open source application I found recently, Rapid Miner. I've been trying to compile it with Eclipse (following Eclipses.org's own instructions on how to do so.) Every time I click Run though I get an error that looks like this:
```
Buildfile: C:\Users\jcarr14\Eclipse\Workspace\RapidMiner_Unuk\build.xml
  [taskdef] Could not load definitions from resource net/sf/antcontrib/antlib.xml. It could not be found.

BUILD FAILED
C:\Users\jcarr14\Eclipse\Workspace\RapidMiner_Unuk\build.xml:329: taskdef class   com.oracle.appbundler.AppBundlerTask cannot be found
using the classloader AntClassLoader[]

Total time: 306 milliseconds
```
It seems to me that there must be a file missing, but I can't figure out where it is supposed to be and as a result, I can't figure out if it is actually there or not, or even if Eclipse is the culprit. I did go into the Eclipse folder and look for a net/sf/antcontrib/antlib.xml, but was unable to locate anything.

I'm assuming that it's possible the problem is not with Eclipse at all, but with Rapid Miner. So I looked for that same location inside of the RapidMiner project structure and was unable to find it. I have also posted a similar question to this one on RapidMiner's forums, just in case this is RapidMiner specific.

I suppose the basic question I need answered is how to check if Ant is installed properly in Eclipse. Once I know that Eclipse is working fine I can then throw all my focus on figuring out what is wrong with RapidMiner...
Jay Carr about 11 years

I'm looking into this. It should have occurred to me I might just be missing a library. Now I just need to figure out where to put this thing...
Jean Waghetti about 11 years

Look where is your ant install (find out where is the executable). put the jar in {ant_install}/lib folder.
Jay Carr about 11 years

THis seems to have worked. I just added an external jar for antcontrib to my Ant settings in Eclipse and I was able to pass that part of the build process. Sadly, I'm not hung up somewhere else, but I'll try and work on that on my own for a little while before complaining on SO...