DBCP Connection pooling apparently failing!

Question

I am trying out the following code per directions from DBCP site, but the output indicates that after I call con.close(), the con.isClosed() return true. Does that mean that DBCP is not working the way I am setting it up or what? Please help!
try
      Class.forName("oracle.jdbc.OracleDriver");
      StackObjectPool pool=new StackObjectPool(2);
      DriverManagerConnectionFactory confactory=new DriverManagerConnectionFactory(url,null);
      PoolableConnectionFactory poolconfactory=new PoolableConnectionFactory(confactory,pool,new StackKeyedObjectPoolFactory(2),null,false,true);
      PoolingDataSource source=new PoolingDataSource(pool);
      Connection con=source.getConnection();
      PreparedStatement stat=con.prepareStatement("select * from employee");
      stat.executeQuery();
      System.out.println(con.isClosed());
      stat.close();
      con.close();
      System.out.println(con.isClosed());
    catch (Exception ex)
      ex.printStackTrace();
    }

Answer 1

Does that mean that DBCP is not working the way I am
setting it up or what? Please help!It's probably working the way it should. The DBCP is probably wrapping the OracleConnection in its own wrapper. When you close the wrapper, it just changes its internal state to say it is closed but doesn't actually close the OracleConnection it has a reference to internally.
Try seeing what class con really is:
System.out.println(con.getClass().getName());Whatever class that is, it probably has a method to get the real connection so that you can make OracleConnection specific calls. If it does, type cast it to the implementor's Connection Class and get the real internal connection from con before you close it and then check its class name. After you close the con check the isClosed method on the internal OracleConnection.