Обсуждение: Class Cast Exception for DataSource
Hi,
I am using Postgres 8.2 version database and postgresql-8.2-504.jdbc3.jar driver.
Snippet of code:
String postgresDataSource =
"org.postgresql.Driver";Class dataSourceClass = Class.forName(postgresDataSource);dataSource = (DataSource) dataSourceClass.newInstance();
I am getting ClassCast exception when i try to run the code in my java application.
Please resolve this problem.
regards
Raghu
Raghavendra MB wrote:
> *String postgresDataSource = **"org.postgresql.Driver"**;*
>
> **
>
> *Class dataSourceClass = Class.forName(postgresDataSource);*
>
> *dataSource = (DataSource) dataSourceClass.newInstance();*
>
> **
>
> *I am getting *ClassCast exception when i try to run the code in my java
> application.
>
> Please resolve this problem.
org.postgresql.Driver doesn't implement the javax.sql.DataSource interface.
If you want a DataSource, just use "new
org.postgresql.ds.PGSimpleDataSource()" or "new
org.postgresql.ds.PGPoolingDataSource()" if you want pooling.
If you don't want to use a DataSource, you should be doing:
Class.forName("org.postgresql.Driver");
Connection conn = DriverManager.getConnection("jdbc:postgresql:....");
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com