write to File from Servlet

[gerard]

here is the piece of code that i wrote: \[code\]public class ServletCounter extends HttpServlet { private final Object lock = new Object(); private int serviceCounter = 0; private FileOutputStream out; private boolean shuttingDown; @Override public void init(ServletConfig servletConfig) throws ServletException { super.init(servletConfig); } @Override protected void service(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws ServletException, IOException { enteringServiceMethod(); try { super.service(httpServletRequest, httpServletResponse); out = new FileOutputStream("C:\\xampp\\tomcat\\webapps\\myapp\\WEB-INF\\lib\\counter.txt"); } catch (FileNotFoundException e) { e.printStackTrace(); } } @Override protected void doGet(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws ServletException, IOException { if (!shuttingDown) { writeToFile("number of servlet access = " + serviceCounter ); } } @Override public void destroy() { ... } private void enteringServiceMethod() { synchronized (lock) { serviceCounter++; writeToFile("method enteringServiceMethod serviceCounter = " + serviceCounter); } } private int getNumServices() { synchronized (lock) { return serviceCounter; } } private void writeToFile(String text) { System.out.println(text); text += "\r\n"; try { out.write(text.getBytes()); } catch (IOException e) { e.printStackTrace(); } } }\[/code\]What i need is every time someone opens my Servlet, it should open "counter.txt" file and store a number of how many times the Servlet was opened. for example if the file hold number 8 then after someone accesses the servlet it should store number 9 and delete number 8. does it make sense? can anyone help me override writeToFile method. the code that i wrote is incomplete, but i'm stuck, tried several things and nothing seems to work.