javadoc for FileDataSource.getInputStream:
    /**
     * This method will return an <code>InputStream</code> representing the
     * the data and will throw the appropriate exception if it can
     * not do so. Currently implemented to throw a new <code>InputStream</code>
     * with each invocation.
     *
     * @return an InputStream
     */

In the last sentence, you have "implemented to throw a new <code>InputStream<code>"
I assume you mean "..return a new...."