This week's book giveaways are in the Java EE and JavaScript forums.
We're giving away four copies each of The Java EE 7 Tutorial Volume 1 or Volume 2(winners choice) and jQuery UI in Action and have the authors on-line!
See this thread and this one for details.
The moose likes Other Open Source Projects and the fly likes Cewolf DataProducer Error while compiling Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of The Java EE 7 Tutorial Volume 1 or Volume 2 this week in the Java EE forum
or jQuery UI in Action in the JavaScript forum!
JavaRanch » Java Forums » Products » Other Open Source Projects
Bookmark "Cewolf DataProducer Error while compiling" Watch "Cewolf DataProducer Error while compiling" New topic
Author

Cewolf DataProducer Error while compiling

Mazhar Ismail
Greenhorn

Joined: Sep 10, 2008
Posts: 11
Hi,

I have installed cewolf on Tomcat6.0 and the examples are running fine. I have written a example dataproducer java file mentioned below.

package de.laures.cewolf.example;

import java.io.*;
import java.util.*;

//import org.apache.common.*;
import org.jfree.data.category.*;

import de.laures.cewolf.*;

public class SimpleDataProvider implements DatasetProducer, Serializable{
public String getProducerId(){
return "de.laures.cewolf.example.simpledata";
}
public boolean hasExpired(Map arg0, Date arg1){
return false;
}
public Object produceDataSet(Map arg0) throws DatasetProduceException{
DefaultCategoryDataset dataset=new DefaultCategoryDataset();
for (int i=1;i<=10;i++){
dataset.addValue(i*1,"first series",new Integer(i));
}
return dataset;
}
}

I am getting 2 compilation errors when i am trying to compile this file. I think it is not able to find the DatasetProducer interface and DatasetProduceException class.

I work on windows. My cewolfexamples are in "C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\cewolfexample-1.0\WEB-INF". The WEB-INF has all the required directories and files cause I am able to run the example application. I have written this java file in "c:\java" directory and trying to compile it from there. Please tell me if I have to specify any classpath if so what should be the classpath and how do I set it.

--
Mazhar
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 41591
    
  55
Welcome to JavaRanch.

What command are you using for compilation? How are you adding the cewolf jar file to the classpath?


Ping & DNS - my free Android networking tools app
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 41591
    
  55
Please UseTheForumNotEmail, and if you use PMs, make sure you allow people to send them to you.

When you compile, make sure you have all required jar files (cewolf, jfreechart and jcommon) in the classpath.
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Cewolf DataProducer Error while compiling