Book Image

Java Projects - Second Edition

By : Peter Verhas
Book Image

Java Projects - Second Edition

By: Peter Verhas

Overview of this book

Java is one of the most commonly used software languages by programmers and developers. In this book, you’ll learn the new features of Java 11 quickly and experience a simple and powerful approach to software development. You’ll see how to use the Java runtime tools, understand the Java environment, and create a simple namesorting Java application. Further on, you'll learn about advanced technologies that Java delivers, such as web programming and parallel computing, and will develop a mastermind game. Moving on, we provide more simple examples, to build a foundation before diving into some complex data structure problems that will solidify your Java 11 skills. With a special focus on the features of new projects: Project Valhalla, Project Panama, Project Amber, and Project Loom, this book will help you get employed as a top-notch Java developer. By the end of the book, you’ll have a firm foundation to continue your journey toward becoming a professional Java developer.
Table of Contents (12 chapters)

The HTTP protocol

The Hypertext Transfer Protocol (HTTP) is built on top of the TCP. When you type a URL in a browser, the browser opens a TCP channel to the server (after DNS lookup, of course) and sends an HTTP request to the web server. The server, after receiving the request, produces a response and sends it to the client. After that, the TCP channel may be closed or kept alive for further HTTP request-response pairs.

Both the request and the response contain a header and an optional (possibly zero-length) body. The header is in text format, and is separated from the body by an empty line.

More precisely, the header and the body are separated by four bytes0x0D, 0x0A, 0x0D, and 0x0A, which are two CR, LF line separators. The HTTP protocol uses carriage return and line feed to terminate lines in the header and, thus, an empty line is two CRLF following each other.

The...