connection without class.forName

[Hari babu]

Hi all,
How can i get the data base connection without using the class.forName.
Thanks in advance
Hari

[Pearlo Muthukumaran]

Hi ,
You can use the following of course if you are having a App Server in place:
import javax.sql.*;
import javax.naming.*;
.....
.......
and within method
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
ht.put(Context.PROVIDER_URL,"t3://localhost:7001");
InitialContext ictx = new InitialContextFactory(ht);
DataSource ds = (DataSource)ictx.lookup("some_jdbc_connection_pool_in_server");
Connection cn = ds.getConnection();
.........
then as usual whatever you want to do with connection
..............
Hope this serves your need
Regards
K.Muthukumaran

InitialContext ictx

[Hari babu]

Hi,
I want to do this without using my application server. how do i do this ?
Any help is appreciated
Hari

[Jamie Robertson]

use the DriverManager class:
Oracle example:

DriverManager.registerDriver (new oracle.jdbc.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@myhost:1521:orcl", "scott", "tiger"); 

Jamie
[ September 22, 2002: Message edited by: Jamie Robertson ]

[A Sethi]

thanks...

But i have seen people connecting to dataBase sucessfully in the following manner.
how is this done??

Following is the link of the code from javaranch user only who was able to access database without the DriverManager.registerDriver statement and Class.forName.

https://coderanch.com/t/401176/java/java/Class-forName

Please explain me .... how is he able to access in this fashion without DriverManager.registerDriver statement.

-Thanks
Anju

[David O'Meara]

The user in the thread linked imports the driver and then does the equivalent thing to Class.forName(), except that their code is now hard-coded to the Driver class. Changing database DRivers requires them to recompile their code.

If you've every seen applications like Jira (bug tracking) and a whole bunch of others including anything that accesses a database a wondered 'How do they have code that can change databases so easily?', the answer is using either Class.forName() or a DataSource to make your code independent of the dtaabase type and Driver type.

Dave

[Martin Wingert]

You can also use the jdbc.drivers property to register a driver to the DriverManager e.g java -Djdbc.drivers=drivers MyProgram. Then you can skip the Class.forName("driver") since the driver will already be registered in the DriverManager.

[A Sethi]

Thanks, I got it