SETTING UP
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Checking the Environment Variables
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The installation instructions for the J2EE SDK and explain how to set the required environment variables Verify that the environment variables have been set to the values noted in Table 2 1 Table 2 1 Required Environment Variables
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Environment Variable
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The location of the J2SE SDK installation The location of the J2EE SDK installation
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Starting the J2EE Server
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To launch the J2EE server, open a terminal window and type this command:
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To stop the server, type the following command:
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Starting the deploytool
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The utility has two modes: command line and GUI The instructions in this chapter refer to the GUI version To start the GUI, open a terminal window and type this command:
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To view the tool s context-sensitive help, press the
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Although not required, the
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The location of the
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GETTING STARTED
Creating the J2EE Application
The sample application contains three J2EE components: an enterprise bean, a J2EE application client, and a Web component Before building these components, you will create a new J2EE application called and will store it in an EAR file named , select File New Application 1 In 2 Click Browse 3 In the file chooser, navigate to 4 In the File Name field, enter 5 Click New Application 6 Click OK
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Creating the Enterprise Bean
An enterprise bean is a server-side component that contains the business logic of an application At runtime, the application clients execute the business logic by invoking the enterprise bean s methods The enterprise bean in our example is a stateless session bean called The source code for is in the directory
Coding the Enterprise Bean
The enterprise bean in this example requires the following code: Remote interface Home interface Enterprise bean class
Coding the Remote Interface
A remote interface defines the business methods that a client may call The business methods are implemented in the enterprise bean code The source code for the remote interface follows
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