This method acquires the value of the Last-Modified HTTP header.

public Date getLastModified()

None.

The method returns the value of the Last-Modified HTTP header.

• The method returns null if the HTTP response does not contain the Last-Modified HTTP header or if HttpURLConnection returns null as the value of the Last-Modified HTTP header.
• If the value of the Last-Modified HTTP header is an empty string or if the value does not comply with the following formats, the IllegalArgumentException exception is thrown.
  
  • EEE, dd MMM yyyy HH:mm:ss zzz
  • EEEE, dd-MMM-yy HH:mm:ss zzz
  • EEE MMM d HH:mm:ss yyyy
  For each pattern character in the Date format, especially the locale-dependant 'E' and 'M', see the information on the SimpleDateFormat class of the Java SE specifications.