import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class FileIOServlet extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("");
out.println("Button Clicked
");
String data = request.getParameter("data");
if (data != null && data.length() > 0) {
out.println("Text from form:");
out.println(data);
} else {
out.println("No text entered.");
}
try {
//Code to write to file
String outputFileName=
System.getProperty("user.home",
File.separatorChar + "home" +
File.separatorChar + "monicap") +
File.separatorChar + "text.txt";
FileWriter fout = new FileWriter(outputFileName);
fout.write(data);
fout.close();
//Code to read from file
String inputFileName =
System.getProperty("user.home",
File.separatorChar + "home" +
File.separatorChar + "monicap") +
File.separatorChar + "text.txt";
FileReader fin = new FileReader(inputFileName);
char c[] = new char[(char)inputFileName.length()];
fin.read(c);
String s = new String(c);
out.println("Text from file:");
out.println(s);
fin.close();
} catch(java.io.IOException e) {
System.out.println("Cannot access text.txt");
}
out.println("
Return to Form");
out.close();
}
}