// also shared
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.");
