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# The Basics

> The lessons in this trail explain how to write applications that access naming and directory services. They give you the basics of how to interact with the directory using the JNDI, from preparing the environment, to looking up objects from the namespace, to searching the directory.

> The Preparations lesson covers how to set up your environment to compile and run JNDI programs.

> The Naming Operations lesson explains how to perform naming operations, such as looking up objects and removing them from the naming service.

> The Directory Operations lesson discusses how to perform directory operations, including searching and modifying entries in the directory.

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