Load JDBC-Driver dynamically with JarClassLoader

Question

Hey!
I have a problem loading JDBC drivers dynamically with a JarClassLoader:
Code:
public class URLLoaderTest {
  public static void main(String[] args) {
  try {
    URL[] urlList = {new File("D:\\jbuilder5\\SQLServerJDBC\\lib\\mssqlserver.jar").toURL(),
                     new File("D:\\jbuilder5\\SQLServerJDBC\\lib\\msbase.jar").toURL(),
                     new File("D:\\jbuilder5\\SQLServerJDBC\\lib\\msutil.jar").toURL()};
    ClassLoader classLoader = new URLClassLoader(urlList);
    Class c = Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver",true,classLoader);
    Object d = c.newInstance();
    DriverManager.registerDriver((Driver)d);
    // DriverManager.getDrivers()    Enumeration is empty
    Connection conn = DriverManager.getConnection("jdbc:microsoft:sqlserver://Server:1433","test","test");
    DatabaseMetaData meta = conn.getMetaData();
    System.out.println("JDBC driver version is " + meta.getDriverVersion());
  catch (Exception e) {System.out.println(e.getMessage());}
}Problem:
Till the DriverManager registraton everything is ok.
The registerDriver Method throws no exception but if I call DriverManager.getDrivers() after calling the registerDriver Method an empty Enumeration is returned.
So the driver is not loaded and DriverManager.getConnection throws an Exception (no suitable driver).
If I include the driver jars into the Classpath everything is running (but that isn't what I want to do).
Is there a solution for this problem? Maybe it is possible to load the data into the AppClassLoader??!!
Thanx in advance.

Answer 1

Found a solution!
For everyone who is interested:
public class URLLoaderTest {
  public static void main(String[] args) {
  try {
    URL[] urlList = {new File("D:\\jbuilder5\\SQLServerJDBC\\lib\\mssqlserver.jar").toURL(),
                     new File("D:\\jbuilder5\\SQLServerJDBC\\lib\\msbase.jar").toURL(),
                     new File("D:\\jbuilder5\\SQLServerJDBC\\lib\\msutil.jar").toURL()};
    ClassLoader classLoader = new URLClassLoader(urlList);
    Class c = Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver",true,classLoader);
    Object d = c.newInstance();
    Driver driver = (Driver)d;
    Properties prop = new Properties();
    prop.setProperty("user","test");
    prop.setProperty("password" ,"test");
    Connection conn = driver.connect("jdbc:microsoft:sqlserver://test:1433",prop);
    System.out.println("JDBC driver version is " + meta.getDriverVersion());
  catch (Exception e) {System.out.println(e.getMessage());}
}