MyServlet.java Source code

Introduction

Here is the source code for MyServlet.java

Source

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class MyServlet extends HttpServlet {

    static int classCount = 0; // shared by all instances
    int count = 0; // separate for each servlet
    static Hashtable instances = new Hashtable(); // also shared

    public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        res.setContentType("text/plain");
        PrintWriter out = res.getWriter();

        count++;
        out.println("Since loading, this servlet instance has been accessed " + count + " times.");

        // Keep track of the instance count by putting a reference to this
        // instance in a Hashtable. Duplicate entries are ignored.
        // The size() method returns the number of unique instances stored.
        instances.put(this, this);
        out.println("There are currently " + instances.size() + " instances.");

        classCount++;
        out.println("Across all instances, this servlet class has been " + "accessed " + classCount + " times.");
    }
}