xxiv

Introduction

The basic structure of servlets

The process of compiling, installing, and invoking servlets

Generating HTML from servlets

The servlet life cycle

Page modification dates and browser caches

Servlet debugging strategies

Reading form data from servlets

Handling both 

GET

 and 

POST

 requests with a single servlet

An on line resume posting service

Reading HTTP request headers from servlets

The purpose of each of the HTTP 1.1 request headers

Reducing download times by compressing pages

Restricting access with password protected servlets

The servlet equivalent of each standard CGI variable

Using HTTP status codes

The meaning of each of the HTTP 1.1 status code values

A search engine front end

Setting response headers from servlets

The purpose of each of the HTTP 1.1 response headers

Common MIME types

A servlet that uses the Refresh header to repeatedly access 

ongoing computations

Servlets that exploit persistent (keep alive) HTTP connections

Generating GIF images from servlets

Cookie purposes and problems

The Cookie API

Some utilities that simplify cookie handling

A customized search engine front end

The purposes of session tracking

The servlet session tracking API

Using sessions to show per client access counts

An on line store that uses session tracking, shopping carts, and 

pages automatically built from catalog entries