Part III

Components and Frameworks

There is more to acing a Java interview than understanding the language. For most roles, knowing the syntax and how to run a Java application is assumed; it is the knowledge of how to use the language to interact, manipulate, and display data.

Many reusable pieces of code, such as algorithms, code to connect to the Internet, or writing to disk have been modularized and abstracted into their own libraries. One of Java’s main strengths is that it is mature enough that most common scenarios have their own library, saving you the time and effort of writing and rewriting the functionality from scratch every time. This part focuses on common libraries and application frameworks to help you produce professional, robust applications capable of communicating with the outside world, whether that is by producing a server that displays web pages, or an application that is used to persist information to a database.

Chapter 12 covers databases, introducing the concept of a database store and how Java can interact with the database.
Chapter 13 introduces different web application servers, explaining how to set them up and provide dynamic content to web pages.
Chapter 14 talks about HTTP and REST: how Java applications can communicate with other services over the Internet.
Chapter 15 is about serialization, and how Java objects are represented outside of the JVM.
Chapter 16 covers the Spring Framework, a hugely popular library that helps integrate many components ...

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