How to add contents of hashset to file?

guys, i need to write hashset data to file..
here is my code:
HashSet<String> hs = new HashSet<String>();
File outfile3= new File("C:\\test.txt");
FileWriter of3 = (new FileWriter(outfile3));
               Iterator it = hs.iterator();
               while (it.hasNext()) {
                    String t = it.next(); <=error
                    of3.write(t);
error : Type mismatch: cannot convert from Object to String
help me out guys..
thanx in advance..

add contents of hashset to file
... write hashset data to file
... new FileWriter(outfile3)Is it write or append? If append: I think FileWriter accepts an optional boolean append parameter.
of3.write(t);Try this:
of3.write(String.valueOf(t));... and BTW "wrapping" your FileWriter in a BufferedWriter improves throughput.
Cheers. Keith.

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