JDBC driver installation

Question

Hi,
I'm a newbie and just started programming in java. I dont know if this message is to be posted here or somewhere else. This is my first post. So please tolerate..
I use Fedora Core 4. I installed the JDBC driver (mysql-connector-java-3.1.12) for the mysql database as specified in the instructions. I copied the mysql-connector-java-3.1.12-bin.jar file to /root/jdk_nb/j2sdk1.4.2/jre/lib/ext and set the CLASSPATH environment variable in .bashrc as follows
export CLASSPATH=${PATH}:/root/jdk_nb/j2sdk1.4.2/jre/lib/ext
I also run the .bashrc file.
THen i executed a small program to get the names of the drivers loaded.
import java.sql.*;
import java.util.*;
class listJdbcDrivers
public static void main(String args[])
List drivers = Collections.list(DriverManager.getDrivers());
for (int i=0; i<drivers.size(); i++)
Driver driver = (Driver)drivers.get(i);
// Get name of driver
String name = driver.getClass().getName();
System.out.println(name);
// Get version info
int majorVersion = driver.getMajorVersion();
int minorVersion = driver.getMinorVersion();
boolean isJdbcCompliant = driver.jdbcCompliant();
System.out.println("Major Version"+majorVersion);
System.out.println("isJdbcCompliant"+isJdbcCompliant);
Then i did a javac listJdbcDrivers.. It compiled
Then i did a java -Djdbc.drivers=mysql-connector-java-3.1.12 listJdbcDrivers..
But it does not print out any drivers. Why is this happening?

Answer 1

That's a lot of chutzpah. No, I will not do your work for you.
DriverManager#registerDriver() adds a driver and registers it. I believe after you do this, getDrivers() would return that driver.
I also mentioned for completeness that instantiating a driver (via newIntance() on a class or via its constructor) normally results in that driver registering itself via DriverManager#registerDriver().
- Saish