String that is null

Hi, I have a problem with String objects that were set to null. I have a String object token, and token.toString() returns null. But when I make equivalence test with (token==null) and (token.equals(null), both returned false. How can I test if a String object to be null?
Thanks!

Have you tested for an empty string that is not null? In other words, what happens when you try

It returns false!! Is there anyway to filter out String tokens that is null?

If a String object is null, it can be compared to null. In your example, (token == null) will return true if String is null and token.toString() will throw a NullPointerException. What you have is a String object which has a value of "null" try token.equals("null")
Hope this helps

Thanks Carl and Nick, but token.equals("null") returns false too.

But I used StringBuffer to take the String data, then converted it to String and then trimmed it. Now there is no null anymore.

I was having the same trouble.
Found this to work.
String s;
if ( s == null )
Lou