Null pointer exception while creating entity object

Asked Dec 30 '15 at 08:54

Active Dec 30 '15 at 08:57

Viewed 31 times

I have an entity and i am creating object for it. object is created and i can set the values. But reference shows null. I am not getting why. Please check my code:

@Entity
@Table(name = "a_table")
public class A {

private static final long serialVersionUID = -8674959693713707364L;

/** The id. */
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY, generator = "IdOrGenerated")
@GenericGenerator(name = "IdOrGenerated", strategy = "foo.IdOrGenerated")
@Column(name = "id")
private Long id;

private Creator creator;

public A() {
}

public A(Creator pCreator) {
    this.creator = pCreator;
}

//setters and getters for id and creator

}

In class B i am creating object A a = new A(); when i debug and see 'a' value is null.

edited Dec 30 '15 at 08:57

asked Dec 30 '15 at 08:54

user1770589

3

What is null exactly ? – Arnaud Dec 30 '15 at 08:56
@Berger reference 'a' is null – user1770589 Dec 30 '15 at 08:58
1

could you show us part of B class where you are getting null.. – Viraj Nalawade Dec 30 '15 at 09:00
1

Mixing local variable with class members? Member stays null because you accidentally assigned to local var? – Jan Dec 30 '15 at 09:01
In class B i tried to create object of A and i am setting value for creator. I kept debugger at a.setCreator(); when i see 'a' in variables while debugging, its null and i can set the values!! – user1770589 Dec 30 '15 at 09:03
@chrylis its not a duplicate man. – user1770589 Dec 30 '15 at 09:09
@user1770589 try updating the question with more relevent code so that you can convince its not a duplicate.. – Viraj Nalawade Dec 30 '15 at 09:11

Null pointer exception while creating entity object

0 Answers0