JDeveloper connect ok, but not getConnection

Hi all, I am working on my first java program with JDeveloper. I was able to connect to my local Oracle9i database successfully, but when I tried to connect it in the program, I got "ORA-06401: NETCMN: invalid driver designator".
*** Here is the export from my JDeveloper connection *****
<?xml version = '1.0'?>
<!DOCTYPE connections>
<connections>
<connection>
<JDBC_PORT>1521</JDBC_PORT>
<ConnectionType>JDBC</ConnectionType>
<HOSTNAME>localhost</HOSTNAME>
<user>SCOTT</user>
<ConnectionName>Connection1</ConnectionName>
<SID>CIS</SID>
<JdbcDriver>oracle.jdbc.driver.OracleDriver</JdbcDriver>
<password>tiger</password>
<ORACLE_JDBC_TYPE>oci8</ORACLE_JDBC_TYPE>
</connection>
</connections>
**** Here is my connection codes in program ******
DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
conn = DriverManager.getConnection ("jdbc:oracle:oci8:@localhost.1521:CIS", "scott", "tiger");
Thanks in advance for your help.
Chris

For using the 'thin' driver
<ORACLE_JDBC_TYPE>thin</ORACLE_JDBC_TYPE>
conn = DriverManager.getConnection ("jdbc:oracle:thin:@localhost.1521:CIS", "scott", "tiger");
If you want to use the thick-oci driver the connection string will be of the format
conn = DriverManager.getConnection ("jdbc:oracle:oci8:@tns_entry_name", "scott", "tiger");
Regards
Elango.

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