MySQL Tutorials - Herong's Tutorial Examples - v4.46, by Herong Yang
Loading JDBC Driver Class - com.mysql.cj.jdbc.Driver
Describes how to load the MySQL JDBC driver class, com.mysql.cj.jdbc.Driver, from mysql-connector-java-8.0.17.jar.
By reading the MySQL Connector/J 8.0.17 reference guide, I see that the standard JDBC driver interface is implemented with a class called com.mysql.cj.jdbc.Driver. So I wrote the following Java program to load com.mysql.cj.jdbc.Driver class using the Class.forName() method:
/* MySqlLoadDriver2.java * Copyright (c) 2005 HerongYang.com. All Rights Reserved. */ import java.sql.*; public class MySqlLoadDriver2 { public static void main(String [] args) { Connection con = null; try { // Load the MySQL JDBC driver Class.forName("com.mysql.cj.jdbc.Driver"); System.out.println("MySQL JDBC driver loaded ok."); } catch (Exception e) { System.err.println("Exception: "+e.getMessage()); } } }
The compilation and execution tests were recorded below. Notice the exception error I got without mysql-connector-java-8.0.17.jar in the classpath:
herong> java -version java version "12.0.1" 2019-04-16 Java(TM) SE Runtime Environment (build 12.0.1+12) Java HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing) herong> javac MySqlLoadDriver2.java herong> java MySqlLoadDriver2 Exception: com.mysql.jdbc.Driver herong> java -cp .;\local\lib\mysql-connector-java-8.0.17.jar MySqlLoadDriver2 MySQL JDBC driver loaded ok.
By the way, in previous MySQL Connector/J releases, like mysql-connector-java-5.1.38-bin.jar, the standard JDBC driver interface was implemented with a class called com.mysql.jdbc.Driver.
Here is my old test program to load the com.mysql.jdbc.Driver:
/* MySqlLoadDriver.java * Copyright (c) 2005 HerongYang.com. All Rights Reserved. */ import java.sql.*; public class MySqlLoadDriver { public static void main(String [] args) { Connection con = null; try { // Load the MySQL JDBC driver Class.forName("com.mysql.jdbc.Driver"); System.out.println("MySQL JDBC driver loaded ok."); } catch (Exception e) { System.err.println("Exception: "+e.getMessage()); } } }
Test result of MySqlLoadDriver.java with JDK 8 and MySQL Server 5.7.10.0 is listed below as a reference:
herong> java -version java version "1.8.0_45" Java(TM) SE Runtime Environment (build 1.8.0_45-b15) Java HotSpot(TM) Client VM (build 25.45-b02, mixed mode, sharing) herong> javac MySqlLoadDriver.java herong> java MySqlLoadDriver Exception: com.mysql.jdbc.Driver herong> java -cp .;\local\lib\mysql-connector-java-5.1.38-bin.jar MySqlLoadDriver MySQL JDBC driver loaded ok.
Table of Contents
MySQL Introduction and Installation
Introduction of MySQL Programs
Perl Programs and MySQL Servers
►Java Programs and MySQL Servers
MySQL Connector/J - Download and Installation
►Loading JDBC Driver Class - com.mysql.cj.jdbc.Driver
Connection URL Tests on Older MySQL Connector/J
Creating Connections with DataSource Class
Getting Driver and Server Information
Creating Tables with AUTO_INCREMENT Columns
Character Strings and Bit Strings
Table Column Types for Different Types of Values
Using DDL to Create Tables and Indexes
Using DML to Insert, Update and Delete Records
Using SELECT to Query Database
Window Functions for Statistical Analysis
Use Index for Better Performance
Transaction Management and Isolation Levels
Defining and Calling Stored Procedures
Variables, Loops and Cursors Used in Stored Procedures
System, User-Defined and Stored Procedure Variables
Storage Engines in MySQL Server
InnoDB Storage Engine - Primary and Secondary Indexes
Performance Tuning and Optimization
Installing MySQL Server on Linux