How to save the content of a JTextArea into a txt file?

Hi, I want to save the content of a JTextArea into a txt file line by line. Here is part of my code(catch IOException part is omitted):
String s = textArea.getText();
File file = new File("file.txt");
BufferedWriter bw = new BufferedWriter(new FileWriter(file));
bw.write(s);
bw.close();
But I found in the file all is binary code instead of text, any people can help me?
Thanks in advance

I can see text in the file now, but the problem is
when I write three lines in textarea, for example
111
222
333
then I open the txt file with notepad, it is
111222333
How to save them line by line? Use a PrintWriter. It lets you write lines (it's the same class as System.out).
http://java.sun.com/j2se/1.4/docs/api/java/io/PrintWriter.html

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user755667 wrote:
Hi,
I am having PDF files stored in BLOB column of a table in Oracle Database (11G R2).
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