Re: How to check if jdbc drier from any vendor is installed or not ?

It's easy enough to specify drivers to the DriverManager via the
jdbc.drivers property and -classpath option. You can also enumerate the
known drivers [1].

<code>
import java.sql.*;
import java.util.*;

class DriveTest {
  public static void main (String args [])
    throws SQLException, ClassNotFoundException {
    System.out.println("Current JDBC Drivers: "
      + System.getProperty("jdbc.drivers"));
    Enumeration e = DriverManager.getDrivers();
    while (e.hasMoreElements()) {
      System.out.println(e.nextElement());
    }
  }}

</code>

<console>
$ make run
javac -cp .:/opt/h2/bin/h2.jar DriveTest.java
java -Djdbc.drivers=org.h2.Driver -cp .:/opt/h2/bin/h2.jar DriveTest
Current JDBC Drivers: org.h2.Driver
org.h2.Driver@3a328f
</console>