NullPointerException while trying to access the entity's particular field

[yuvaraj KumarAmudhan]

Hello all,

I have a table (BaseInfo) which has four fields called Id(primary key), Name, Age and Type. In this, "Type" field is Bigint datatype and it can hold 1 or 2 or null as value.
I have some another table (AdInfo) which refers the BaseInfo's Type field.

I inserted a record in BaseInfo table with the values (1, x, 28, (null)).

I can get the BaseInfo object by finding a record with the primary key "1" with the statement (em.find(BaseInfo.class, 1)).
And also i can print the values of that object except the "Type's value".

System.out.print(BaseInfoObj.getName()); --- Prints the value
System.out.print(BaseInfoObj.getAge()); ---- Prints the value

System.out.print(BaseInfoObj.getType()); ---- prints
javax.ejb.EJBException: java.lang.NullPointerException
ERROR [STDERR] at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:77)
ERROR [STDERR] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
ERROR [STDERR] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
ERROR [STDERR] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
ERROR [STDERR] at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)

Any idea regarding this?

Thank you!

[yuvaraj KumarAmudhan]

Anybody having any idea about this?

This might be the basic thing but i don't know how to resolve this.

[Palash Nandi]

Hi yuvaraj,
What kind of object is BaseInfoObj, does it have other references inside it, because as as shown by the previous statements its reference cannot be null. I think the method BaseInfoObj.getType() in internally calling some method of another internal reference object inside BaseInfoObj which is null.

[Jaikiran Pai]

And please post the entire exception stacktrace.

[yuvaraj KumarAmudhan]

Thanks for your replies. Just now i found the problem (Casting). Fixed.