How to connect Oracle9i with Tomcat 4.0?

Tonney8888

I am trying to connect Oracle 9i with Tomcat 4.0 using jdbc. (with jdk 1.4.2)
I have included classes12.jar in my jdk1.4.2/jre/lib/ext directory

I am using the following to connect to Oracle:

public Connection establishDB(){
     Class.forName("oracle.jdbc.driver.OracleDriver";
     Connection conn = DriverMager.getConnection("jdbcracle:thinlocalhost:1521:Oracle9i";
     return conn;
}

1st question: Tomcat and Oracle are installed on the same machine
,how can I find the port number 1521 and the oracle's name(the name of database when you established it)?

2nd question: I get this error too
java.sql.SQLException: Io exception: The network adapter could not establish the connection.

What else do u suggest to make it work.
Thank you!

Tonney8888

I've got it now
url should be
Connection conn = DriverMager.getConnection("jdbcracle:thinlocalhost:1521:Oracle9i","scott","tiger";
Thank your prompt!