Beginning Java Networking

What does this book cover?

Networking in JDK 1.3 and 1.4
Network Basics
Java I/O, Threads
Java security model, JCA, JAAS, JCE and JSSE
TCP, UDP, Multicasting
Java URL handler architecture
Serialization, RMI, CORBA
Servlets, JavaMail, JMS

Book Overview

The increasing popularity of the Internet has resulted in the majority of today's programming tasks and applications involving some form of networking. Almost every programming language provides some networking facilities. However, unlike other programming languages, Java had support for network programming built into it right from the start. Java, therefore, allows you to develop powerful network applications with exceptional ease. This book introduces you to the world of Java network programming and takes you far inside it.

The chapters of this book are grouped in five sections. The first section looks at network basics. Java networking preliminaries are then covered in the following section. The third section explores classes that are provided by Java to handle a variety of network tasks. Java API's that are used for distributed network programming are covered in section four. The fifth and final section investigates new networking features and improvements offered by JDK 1.4.

Who is this book for?

Familiarity with networking is not needed for reading this book, but a working knowledge of Java is required. The book, however, does cover core Java classes that are relevant to networking. Both the beginner and the more advanced programmer, therefore, should benefit from this book. By the end of the book, you will have acquired a deep understanding of various network concepts and protocols and developed extensive knowledge of Java APIs that you can use to develop sophisticated network applications.

Summary of Contents

Introduction		1
Chapter 1:	Introduction to Java Networking	11
Chapter 2:	Network Basics	25
Chapter 3:	Network Application Models	47
Chapter 4:	Web Basics	63
Chapter 5:	Java I/O	83
Chapter 6:	Threads	117
Chapter 7:	Java Security Model	153
Chapter 8:	Internet Addressing and Naming	191
Chapter 9:	TCP Programming	217
Chapter 10:	UDP Programming	263
Chapter 11:	Multicasting	295
Chapter 12:	Java URL Handler Architecture	331
Chapter 13:	Implementing an HTTP Server	381
Chapter 14:	Making Network Applications More Secure	445
Chapter 15:	Object Serialization	509
Chapter 16:	RMI	531
Chapter 17:	CORBA	563
Chapter 18:	Servlets	605
Chapter 19:	E-mail With JavaMail	643
Chapter 20:	Messaging with JMS	689
Chapter 21:	Networking in JDK 1.4	723
Appendix A:	Java Network Connectivity Exceptions	763
Appendix B:	Installing and Configuring Tomcat 4.0	777
Index:		785

Java Security Model

If you are studying Java Networking with an eye on writing networked client software, you should be acutely aware of the security implications of downloading executable content over the network. A basic knowledge of the Java security framework can help you to decide when you can trust code, and how to limit the trust you extend to downloaded code. Should you be planning to write network services, such as web servers, security is absolutely vital. You should assume that the server will be attacked sooner or later. Most of the Java preliminaries on network programming have been covered now, but the final ingredient needed before we can safely embark on it is security.

In this chapter, you will see why Java is exceptionally well suited to writing network-enabled code, and be shown how the Java security model can help you make it even more secure. You will:

See why security is important in a heavily networked environment
Understand the fundamentals of access control as introduced in Java 1.0 and extended in Java 1.1, notably the "sandbox model"
Sign your code to authenticate it to others and make it tamper-proof
Understand the Java 2 platform security model which introduces permissions and policies
Give Java classes specific permissions to access parts of the system using a security policy
Create your own permissions, and securely grant access to services you provide
Use the Java 2 security tools
Although some cryptography terms cannot be avoided, this chapter covers only those that are absolutely necessary. An in-depth treatment of the topic follows later in Chapter 14.

Applet Index
(sorted alphabetically)
A B C D E F G H I J K
L M N O P Q R S T U
V W X Y Z #s

The Java Source
(applets w/source code)
A B C D E F G H I J K
L M N O P Q R S T U
V W X Y Z

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