I've downloaded Apache POI, but when I try to use it my code doesn't compile

I've recently download poi-src-3.2-FINAL from apache.org. Now I can't write these:

import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.hwpf.*;
import org.apache.poi.hwpf.extractor.*;

Now I can't use the classes of HWPFDocument and WordExtractor. I can only

import org.apache.*;

Did I forget to download any other thing?

From stackoverflow

• "src" usually indicates a package containing only the source code, not the compiled classes. Check to see if there is a "bin" download available for you.

  Update: the binary release is indeed named poi-bin-3.2-FINAL, here is a download link.