Java by API/javax.servlet/ServletResponse

ServletResponse: getBufferSize()

   <source lang="java">

import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class Buffering extends HttpServlet {

 public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
     IOException {
   res.setBufferSize(8 * 1024); // 8K 
   res.setContentType("text/html");
   PrintWriter out = res.getWriter();
   int size = res.getBufferSize(); // returns 8096 or greater
   log("The default buffer size is " + size);
   out.println("The client won"t see this");
   res.reset();
   out.println("Nor will the client see this!");
   res.reset();
   out.println("And this won"t be seen if sendError() is called");
   if (req.getParameter("param") == null) {
     res.sendError(res.SC_BAD_REQUEST, "param needed");
   }
 }

}

      </source>
   
  
 
  

ServletResponse: getWriter()

   <source lang="java">

import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class MainServlets extends HttpServlet {

 int count;
 public void init() throws ServletException {
   String initial = getInitParameter("initial");
   try {
     count = Integer.parseInt(initial);
   } catch (NumberFormatException e) {
     count = 0;
   }
 }
 public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
     IOException {
   res.setContentType("text/plain");
   PrintWriter out = res.getWriter();
   count++;
   out.println("Since loading (and with a possible initialization");
   out.println("parameter figured in), this servlet has been accessed");
   out.println(count + " times.");
 }

}

      </source>
   
  
 
  

ServletResponse: reset()

   <source lang="java">

import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class Buffering extends HttpServlet {

 public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
     IOException {
   res.setBufferSize(8 * 1024); // 8K 
   res.setContentType("text/html");
   PrintWriter out = res.getWriter();
   int size = res.getBufferSize(); // returns 8096 or greater
   log("The default buffer size is " + size);
   out.println("The client won"t see this");
   res.reset();
   out.println("Nor will the client see this!");
   res.reset();
   out.println("And this won"t be seen if sendError() is called");
   if (req.getParameter("param") == null) {
     res.sendError(res.SC_BAD_REQUEST, "param needed");
   }
 }

}

      </source>
   
  
 
  

ServletResponse: setContentType(String arg0)

   <source lang="java">

import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class MainServlets extends HttpServlet {

 int count;
 public void init() throws ServletException {
   String initial = getInitParameter("initial");
   try {
     count = Integer.parseInt(initial);
   } catch (NumberFormatException e) {
     count = 0;
   }
 }
 public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
     IOException {
   res.setContentType("text/plain");
   PrintWriter out = res.getWriter();
   count++;
   out.println("Since loading (and with a possible initialization");
   out.println("parameter figured in), this servlet has been accessed");
   out.println(count + " times.");
 }

}

      </source>