s'il vous plait aider moi a l'utilisation de lutinJ2R
j'ai fait un programme.java

import org.codelutin.j2r.RProxy;
import org.codelutin.j2r.REngine;
import org.codelutin.j2r.*;
import org.codelutin.j2r.jni.*;
public class Rproxy{
    public static void main(String [] args) throws RException
    {
//        new RProxy();
    //RJniEngine eng=new RJniEngine();
//    eng=new RProxy();
        REngine engine;
        engine = new RProxy();
        engine.voidEval("t<-sin(0)");
      // eng.voidEval("t<-sin(0)");
double d = (Double)engine.eval("t");
//double d = (Double)eng.eval("t");
System.out.println("le sin(0) est"+d);

    }
}
voici l'erreur obtenue
--------------------Configuration: testproxy - JDK version 1.5.0_15 <Default> - <Default>--------------------
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at org.codelutin.j2r.RProxy.<init>(RProxy.java:54)
    at Rproxy.main(Rproxy.java:12)

Process completed.
s'il vous plait s'il ya un test.java executable envoyer a moi
cas urgent