I can't use Entity Class (JPA) in Netbeans7.0 .

[mmc01]

I tried to use Entity Class (JPA) in Netbeans7.0 but It doesn't work.

1. I create Enterprise Application name BookApp.

Create Entity Class

2. I right click at BookApp-ejb and select Entity Classes fron Database.
3. In dialog New Entity Class from Database I insert JNDI Name:jdbc/test for connect to test database and select table books. After that ,I click Next for insert Package: entity and click Finish.

Create Session Bean

4. I right click at BookApp-ejb and select Session Beans for Entity Classes and click Next.
5. I click Add All >> and click Next.
6. I insert Package: sb , create Interface:Local and click Finish.

Create Web Application

7. I right click BookApp-war and select HTML insert HTML File Name :findBook and click Finish.
8. I put this code in HTML file