Q: How to delete a feature class from a GDB using ArcObjects for Java? I've seen this solution which may works in ArcObjects for VB/.Net:
How to overwrite a shapefile or feature class using arcobjects
When I try to convert it into Java, I get a ClassCastException on the IDataset cast.
Here is my code:
IWorkspace workspace = ...
IWorkspace2 workspace2 = (IWorkspace2)workspace;
if(workspace2.isNameExists(esriDatasetType.esriDTFeatureClass, featureClassName)) {
    IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspace;
     // ClassCastException here
    IDataset featureClassDataset = (IDataset)featureWorkspace.openFeatureClass(featureClassName);
    if(featureClassDataset.canDelete()) {
        featureClassDataset.delete();
    } else {
        // alert: the feature class exists but couldn't be deleted
    }
}
IFeatureClass featureClass = featureDataset.createFeatureClass(...);

Does anyone know how we can't use the IDataset interface for a feature class as in VB?
How to delete a feature class in Java else?

A: I found a solution: the problem came from the way I created the IWorkspace object.
The best way to do it in ArcObjects API for Java is:
    IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactory();
    IWorkspaceName workspaceName = workspaceFactory.create(parentDirectory, gdbName, null, 0);
    IName name = (IName)workspaceName;
    IWorkspace workspace = new Workspace(name.open());

even if in the ESRI documentation, it's written to use new IWorkspaceProxy(name.open()) (I think that's en error).
