Loading Driver Class with Class.forName()

This section provides a tutorial program on how to load Microsoft JDBC Driver 1.0 class explicitly using the Class.forName() method.

If you are using an older version of JDK, you need to load the JDBC driver class yourself. To do this you need to use the Class.forName() method to load the driver class, com.microsoft.sqlserver.jdbc.SQLServerDriver, which represents the Microsoft JDBC Driver.

Here is my sample program to load Microsoft JDBC Driver 4.2 class explicitly using the forName() method:

/* ConnectionTest1.java
 - Copyright (c) 2015, HerongYang.com, All Rights Reserved.
import java.sql.*;
public class ConnectionTest1 {
  public static void main(String [] args) {
    Connection con = null;
    try {

// Load Microsoft JDBC Driver
      System.out.println("JDBC driver loaded ok.");
    } catch (java.lang.ClassNotFoundException e) {
      System.err.println("ClassNotFoundException: "

Compile and run this program:

C:\herong>\Progra~1\java\jdk1.8.0_45\bin\javac ConnectionTest1.java

C:\herong>\Progra~1\java\jdk1.8.0_45\bin\java ConnectionTest1

ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver

I was getting this exception, because I forgot to add the JDBC driver jar file to the classpath in the "-cp" option. Here is the correct way to run this Java program with the JDBC driver jar file:

   -cp .;\local\lib\sqljdbc42.jar ConnectionTest1

JDBC driver loaded ok.

Last update: 2015.

Table of Contents

 About This Book

 JDBC (Java Database Connectivity) Introduction

 JDK (Java SE) Installation

 Installing and Running Java DB - Derby

 Derby (Java DB) JDBC Driver

 Derby (Java DB) JDBC DataSource Objects

 Java DB (Derby) - DML Statements

 Java DB (Derby) - ResultSet Objects of Queries

 Java DB (Derby) - PreparedStatement

 MySQL Installation on Windows

 MySQL JDBC Driver (MySQL Connector/J)

 MySQL - PreparedStatement

 MySQL - Reference Implementation of JdbcRowSet

 MySQL - JBDC CallableStatement

 MySQL CLOB (Character Large Object) - TEXT

 MySQL BLOB (Binary Large Object) - BLOB

 Oracle Express Edition Installation on Windows

 Oracle JDBC Drivers

 Oracle - Reference Implementation of JdbcRowSet

 Oracle - PreparedStatement

 Oracle - JBDC CallableStatement

 Oracle CLOB (Character Large Object) - TEXT

 Oracle BLOB (Binary Large Object) - BLOB

 Microsoft SQL Server 2005 Express Edition

Microsoft JDBC Driver for SQL Server - sqljdbc42.jar

 Installing Microsoft JDBC Driver for SQL Server

 Loading Driver Class Automatically

Loading Driver Class with Class.forName()

 DriverManager.getConnection() and Connection URL

 Enabling TCP/IP with SQL Server Configuration Manager

 Specifying Port Number in Connection URL

 Instance Name Better than Port Number

 Specifying Instance Name in Connection URL

 Closing the Database Connection - con.close()

 Specifying Database Name in Connection URL

 Incorrect Database Name in Connection URL

 Creating Connections with DataSource Class

 Microsoft JDBC Driver - Query Statements and Result Sets

 Microsoft JDBC Driver - DatabaseMetaData Object

 Microsoft JDBC Driver - DDL Statements

 Microsoft JDBC Driver - DML Statements

 SQL Server - PreparedStatement

 SQL Server CLOB (Character Large Object) - TEXT

 SQL Server BLOB (Binary Large Object) - BLOB

 JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver

 JDBC-ODBC Bridge Driver - Flat Text Files

 JDBC-ODBC Bridge Driver - MS Access

 JDBC-ODBC Bridge Driver - MS SQL Server

 Summary of JDBC Drivers and Database Servers

 Additional Tutorial Notes to Be Added

 Outdated Tutorials


 PDF Printing Version