Java EE (Java Enterprise Edition) General Discussion

Hello,

I'm using JPA with Hibernate. I have a Entity 'Customer' with 30 fields which is mapped to table 'customer_table'. I want all rows but only 2 columns.
In SQL, I would have written a query:

SELECT customer_id,customer_name from customer_table

In JPA, I wrote:

Query q = em.createQuery("SELECT c.customerId, c.customerName from Customer c"); 
List<Customer> customerList = q.getResultList(); 
for(Customer customer: customerList ){ 
        System.out.println("customer Id=" + customer.getCustomerId() ); 
}

But when I try to run, I get 'java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to entity.Customer'.

Please tell how to resolve this issue.

Thank You.