JDBC Connectivity With MySQL Database

I created a database in mysql, but I have problems communicating with the DB in java.

Here is the error :

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/books
at java.sql.DriverManager.getConnection(DriverManager.java:604)
at java.sql.DriverManager.getConnection(DriverManager.java:221)
at displayauthors.DisplayAuthors.main(DisplayAuthors.java:30)
java.lang.NullPointerException

[Code] ....
 
HERE IS THE CODE 

public class DisplayAuthors {   
// database URL                             
   static final String DATABASE_URL = "jdbc:mysql://localhost:3306/books";
   // launch the application
   public static void main( String args[] )

[Code] ....