Re: [appengine-java] Null Pointer Exception at the time of transaction commit.

Thanks, But i'm not getting wat are u saying so can u plz explain clearly... -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this

Re: [appengine-java] Null Pointer Exception at the time of transaction commit.

Sushama Khadilkar. * * Create Date : 17-Feb-2010 */ @SuppressWarnings(serial) @Entity public class Department implements Serializable{ @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Key dept_id; private String dept_name; private String head; @OneToMany

Re: [appengine-java] Null Pointer Exception at the time of transaction commit.

Thanks Again Stephan Hartmann,But can u tell me one thing , cant we use List or Set or something else for the return type of the addEmp() method. because while using SetEmployee as a return type in Async in greeting Service i m gettin a error. so plz can u tell it me. Plz Plz. The output

[appengine-java] Re: NullPointerException at Transaction.commit()

Max, Actually that problem is solved .I completely changed my POJO's and that error is gone . But now i have one more question to you Question How can i send a list of employees in a particular department , because i tried it using Set List but it is giving me a error . So could you plz

[appengine-java] Null Pointer Exception at the time of transaction commit.

package com.wissen.enterprisebysush.server; import java.util.List; import javax.jdo.JDOHelper; import javax.jdo.PersistenceManager; import javax.jdo.PersistenceManagerFactory; import javax.jdo.Transaction; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory;