error in java : cannot access org.dom4j.Element

when i compile my programm, I have this error :





Topo.java:547: cannot access org.dom4j.Element


file org/dom4j/Element.class not found


Standardizer std = new Standardizer(new File(stdrules));











where could I find the class org.dom4j.Element.class?

Ok I find it the the jchem/lib/dom4j.jar

Yes, you are right, it is automatically included in your CLASSPATH when you run JChem scripts (e.g. react, standardize) but you have to include it in your CLASSPATH explicitly if you use our API.