Book Image

Learning Modular Java Programming

By : Tejaswini Mandar Jog
Book Image

Learning Modular Java Programming

By: Tejaswini Mandar Jog

Overview of this book

Modular programming means dividing an application into small parts and then developing it. It is an approach taken by developers to build applications and helps them add efficiency in their development process, thus making it more effective. The book starts with the fundamentals of Modular Programming. Then we move on to the actual implementation, where we teach developers how to divide an application into different modules or layers (such as presentation, execution, security, lifecycle, services, and so on) for better management. Once readers are well-versed in these modules and their development, the book shows how to create bindings in order to join these different modules and form a complete application. Next, the readers will learn how to manage these modules through dependency injection. Later, we move on to testing; readers will learn how to test the different modules of an application. The book ends by teaching readers how to maintain different versions of their application and how to modify it. By the end of the book, readers will have a good understanding of modular programming and will be able to use it to build applications with Java.
Table of Contents (15 chapters)

Introduction to ORM


To overcome these drawbacks, developers have the Object Relational Mapping (ORM) technique. ORM helps to manage the impedance mismatch between an object-oriented application and a relational database. ORM helps to write less complex applications. With the help of ORM frameworks, we can persist the objects to the relational tables using the mapping between the tables and the objects. iBatis, JPA and Hibernate are the ORM technologies which are on the market.

Advantages of using ORM

The advantages of using ORM are as follows:

  • ORM maps an object to the table

  • It supports its own query language instead of using SQL

  • Less database-dependent code

  • Low maintenance cost

  • Optimizes the performance by providing caching

  • Provides ways for automatic versioning and timestamping

Let's now discuss the Hibernate framework.

Introduction to Hibernate

Hibernate is a Java-based open source persistence framework also called an ORM tool. It has APIs to support persistence. Hibernate applications define persistence...