code: public ZipEntry getEntry(String name) {
          ZipEntry ze = super.getEntry(name);
          if (ze != null) {
              return new JarFileEntry(ze);
          }
          return null;
      }
docs: Returns the <code>ZipEntry</code> for the given entry name or
  <code>null</code> if not found.
  
  @param name the jar file entry name
  @return the <code>ZipEntry</code> for the given entry name or
  <code>null</code> if not found
  
  @throws IllegalStateException
  may be thrown if the jar file has been closed
  
  @see java.util.zip.ZipEntry