Enterprise Java Computing

Using this book, developers should be able to :

• Integrate relational databases with RMI and servlets using JDBC
• Develop sophisticated servlet-based middleware
• Design multi-tier EJB applications
• Write Jini services
• Understand advanced issues regarding RMI and Java IDL development
• Perform Java/legacy-system integration using JNI

This book empowers corporate developers to deliver mission-critical Java applications that can be deployed in the real world. With Enterprise Java Computing the reader will master the critical building blocks that are necessary for developing robust client-server applications, without getting bogged down in the specifics of the Java language and its syntax.

Table of contents

Chapter 1: Introduction to Enterprise Java Computing

Key Enterprise Technologies

Using Java for Enterprise Application Development

Summary

Chapter 2: Java Database Connectivity

JDBC Architecture

JDBC Driver Types

Selecting a JDBC Driver

JDBC URLs

Java/SQL Type Mappings

Using the JDBC API

Optimizing Queries With Prepared Statements

Calling stored procedures using callable statements

SQL Escape Syntax

Metadata

Transaction Management

Transaction Isolation Levels

Implementing Connection Pools

A three-tier solution: Integrating RMI with JDBC

JDBC 2.0

Summary

Chapter 3: Deploying Java Servlets

Why Servlets are better than CGI Scripts

The Java Servlet Development Kit

Understanding the Servlet Life Cycle

Demonstrating Session-Tracking: The Shopping Cart Servlet

Using Cookies for Client-side Persistency

The SingleThreadModel Interface

Integrating Servlets with JDBC

Integrating Servlets with RMI

Applet-Servlet Communication Using Object Serialization

Summary

Chapter 4: Melding Java with Legacy Systems using JNI

Introducing Native Methods

JNI Design Goals

What can you do with JNI?

Understanding the JNI Life-Cycle

Mapping between Java and C Data Types

Accessing Java Objects from Native Methods

Obtaining JVM Type Signatures

Accessing Java Arrays

Accessing Java Methods from Native Methods

JNI Exception Handling

Multithreaded programming with JNI

Using the Invocation API

Summary

Chapter 5: Object Serialization

Fundamentals of Object Serialization

The Serializable Interface

Implementing Custom Serialization

Implementing Custom Serialization

Transmitting Objects over Sockets

Transmitting Objects over Compressed Sockets

Advanced Serialization

Encrypting Serialized Objects via Sealed Objects

Understanding Object Versioning

Serialization ? Advantages and Disadvantages

Summary

Chapter 6: Remote Method Invocation and Jini technology

Developing an RMI system - A stepwise approach

Understanding Remote Polymorphism

Implementing RMI Callbacks

Distributed Garbage Collection

Working With Firewalls

Remote Object Activation

Implementing Custom Sockets

Jini Technology

Developing a Jini service

Comparing Jini with RMI

Applying Jini Technology

Future Trends

Summary

Chapter 7: Java IDL - Java meets CORBA

The CORBA Distributed Computing Model

The Object Management Architecture

The CORBA 2.0 Architecture

The Interface Definition Language

IDL to Java Mapping

Developing CORBA Servers and Clients

Stringified Object References

The InterestRates Server Example

Common Object Services - The Naming Service

Common Object Services - The Event Service

Putting it all together - The Bank Example

Comparing CORBA and Java/RMI

Summary

Chapter 8: Enterprise JavaBeans

Backgrounder ? The Relevant Technologies

Enterprise JavaBeans ? Components at the Server

The EJB Model

The EJB Lifecycle

EJB Components

Developing an N-tier EJB application

Developing Entity Beans

Developing Session Beans

Modelling using Session and Entity Beans

The EJB container

EJB Servers

Deploying EJBs

Future trends

Summary