JDBC stands for Java Database Connectivity. It is a set of API for connecting the database from Java program. JDBC API provides the API for:

Connecting to database
Getting the database information
Performing add, update, delete and selection operations on the dataset.
Controlling and managing the database translations between two or more JDBC statements.
You can call database views, Stored procedures from Java program.

For more information, visit the following links:

http://www.roseindia.net/jdbc/

http://www.roseindia.net/jdbc/jdbc-mysql/MysqlConnect.shtml

http://roseindia.net/tutorial/java/jdbc