Book Image

Introduction to JVM Languages

Book Image

Introduction to JVM Languages

Overview of this book

Anyone who knows software development knows about the Java Virtual Machine. The Java Virtual Machine is responsible for interpreting Java byte code and translating it into actions. In the beginning, Java was the only programming language used for the JVM. But increasing complexity of the language and the remarkable performance of the JVM created an opening for a new generation of programming languages. If you want to build a strong foundation with the Java Virtual Machine and get started with popular modern programming languages, then this book is for you. The book will begin with a general introduction of the JVM and its features, which are common to the JVM languages, helping you get abreast with its concepts. It will then dive into explaining languages such as Java, Scala, Clojure, Kotlin, and Groovy and will show how to work with each language, their features, use cases, and pros and cons. By writing example projects in those languages and focusing on each language’s strong points, it will help you find the programming language that is most appropriate for your particular needs. By the end of the book, you will have written multiple programs that run on the Java Virtual Machine and know about the differences between the various languages.
Table of Contents (21 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Java Database Connectivity (JDBC)


The Java Database Connectivity (JDBC) standard is a standard that makes it possible to access Database management system (DBMS) servers in JVM applications. Popular examples of popular, enterprise-ready DBMS servers are:

  • Oracle Database
  • Oracle MySQL
  • MariaDB
  • Microsoft SQL Server
  • IBM DB2
  • PostgreSQL

To connect a JVM application to a DBMS server using JDBC, a custom JDBC driver for that database system is required. The application will load the JDBC driver and provide a connection string that usually contains the server's hostname, port, and credentials. The JDBC system will ensure that the proper driver is initialized correctly and that the driver will connect to the database and return a Connection object that the application will use to communicate with the database.

Note

Those of you who are familiar with Microsoft development environments can compare JDBC with the ADO.NET or the ODBC standards.

The JDBC standard does not require the DBMS server itself to be implemented...