use connection pooling

i am tring to use connection pooing with postgresql but i was unable to found complete example about that.

got some idea from the documentation, but i was unable to run the given example.

please help me to getting start..

thanks....

Jdbc3PoolingDataSource source = new Jdbc3PoolingDataSource();
source.setDataSourceName("A Data Source");
source.setServerName
("localhost");
source.setDatabaseName("test");
source.setUser("testuser");
source.setPassword("testpassword");
source.setMaxConnections(10);

Connection con = null;
try {
    con = source.getConnection();
    // use connection
} catch (SQLException e) {
    // log error
} finally {
    if (con != null) {

        try { con.close(); } catch (SQLException e) {}
    }
}