Book Image

Java 11 Cookbook - Second Edition

By : Nick Samoylov, Mohamed Sanaulla
Book Image

Java 11 Cookbook - Second Edition

By: Nick Samoylov, Mohamed Sanaulla

Overview of this book

For more than three decades, Java has been on the forefront of developing robust software that has helped versatile businesses meet their requirements. Being one of the most widely used programming languages in history, it’s imperative for Java developers to discover effective ways of using it in order to take full advantage of the power of the latest Java features. Java 11 Cookbook offers a range of software development solutions with simple and straightforward Java 11 code examples to help you build a modern software system. Starting with the installation of Java, each recipe addresses various problem by explaining the solution and offering insights into how it works. You’ll explore the new features added to Java 11 that will make your application modular, secure, and fast. The book contains recipes on functional programming, GUI programming, concurrent programming, and database programming in Java. You’ll also be taken through the new features introduced in JDK 18.3 and 18.9. By the end of this book, you’ll be equipped with the skills required to write robust, scalable, and optimal Java code effectively.
Table of Contents (18 chapters)

Working with large objects


In this recipe, you will learn how to store and retrieve a LOB that can be one of three types—Binary Large Object (BLOB), Character Large Object (CLOB), and National Character Large Object (NCLOB). 

Getting ready

The actual processing of LOB objects inside a database is vendor-specific, but JDBC APIs hide these implementation details from the application by representing the three LOB types as interfaces—java.sql.Blob, java.sql.Clob, and java.sql.NClob.

Blob is usually used to store images or other non-alphanumeric data. On the way to the database, an image can be converted into a stream of bytes and stored using the INSERT INTO statement. The Blob interface allows you to find the length of the object and convert it into an array of bytes that can be processed by Java for the purpose of displaying the image, for example.  

Clob allows you to store character data. NClob stores Unicode character data as a way to support internationalization. It extends the Clob interface...