File file = new File(“aa.data”);
try {
// delete file if exists
file.delete();
file.createNewFile();
FileWriter fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw);
bw.write("123");
bw.newLine();
bw.flush();
bw.close();
fw.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
System.out.println("cookie write to file");
}
-----------------------------
try {
File file=new File("aa.data");
FileReader fr=new FileReader(file);
BufferedReader br=new BufferedReader(fr);
String line;
while((line=br.readLine())!= null)
{
StringTokenizer str=new StringTokenizer(line,"");
System.out.print(str.nextToken()+"**");
}
}
catch(Exception e)
{
e.printStackTrace();
}