org.linkedin.util-core/src/main/java/org/linkedin/util/io/resource/internal/JarResourceProvider.java
@Override
  public boolean doList(String path, ResourceFilter filter)
  {
    try
    {
      JarFile jarFile = new JarFile(_jarResource.getFile());
      try
      {
        return doList(path, filter, jarFile);
      }
      finally
      {
        jarFile.close();
      }
    }
    catch(IOException e)
    {
      if(log.isDebugEnabled())
        log.debug("exception (ignored) while listing path " + path, e);

      return false;
    }
  }
@Override
  public boolean doList(String path, ResourceFilter filter)
  {
    try
    {
      JarFile jarFile = new JarFile(_jarResource.getFile());
      try
      {
        return doList(path, filter, jarFile);
      }
      finally
      {
        jarFile.close();
      }
    }
    catch(IOException e)
    {
      if(log.isDebugEnabled())
        log.debug("exception (ignored) while listing path " + path, e);

      return false;
    }
  }
If the path denotes a directory, then it will return all resources that are contained in the
directory.

@param path   the path to the resource (it already ends with /)
@param filter the filter to include only some resources in the result
@return <code>true</code> if it was a directory, <code>false</code> otherwise