On Day 15 you'll learn about the emergence of the Java Message Service (JMS) API. You begin by looking at point-to-point messaging and publisher-subscriber messaging. You'll then learn about the individual components of a message object and important interfaces of the API used in creating queues and topics. The last topic you'll study is message-driven beans.
Day 16 is devoted to deploying the case study airline ticket booking system application that you have been developing over the last two weeks.
An important area for developers is identifying problems that occur during the execution of an application. Day 17 covers the different techniques you can use for debugging applications: debugging, tracing, assertion, and logging. You'll learn how to use the logging services provided by WebLogic Server using the message catalog framework. You'll also get a quick overview of the new Logger API in JDK 1.4.
Day 18 covers administration and security concepts in WebLogic Server. You'll learn how to operate the Administration Console using a browser as well as how to manage the WebLogic Server from the command prompt. You'll get a brief overview of the different components that can be configured using the Administration Console. Then you'll learn about users, groups, principals, and subjects and see a brief overview of JAAS and the security architecture of WebLogic Server.
Day 19 covers the different tools available with WebLogic Server, including development tools (the BEA Workshop and JBuilder), compilers, deployment tools (WebLogic Builder, weblogic.Deployer, and the BEA XML Editor), and the Administration Console.
Day 20 is spent studying the jCOM bridge software and the Extended Markup Language (XML). You'll begin by learning some simple concepts of object binding and the integration problem that jCOM addresses. Then you'll study the different tools that form the jCOM bridge software. After this, you'll examine important concepts of XML like DTDs and XML schemas and explore the SAX and DOM APIs.
On Day 21 you'll cover the J2EE Connector Architecture. You'll begin by studying JCA concepts and what JCA aims to achieve in the enterprise application solution space. Next you'll study the main constituents of JCA: resource adapters, the Common Client Interface, and the three system contracts. Finally, you'll learn how to configure and deploy a resource adapter in WebLogic Server.
