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QUESTION: 26 A developer is writing implementation code for an EJB 3.0 message-driven bean class that processes booking requests. Within the business logic of the onMessage method, a temporary problem can occur. In that case the developer wants to make sure that the booking request is processed again in 30 minutes. Which two can the developer select? (Choose two.)
A. Throwa runtimeexception torollbackthetransaction.
B. Call setRollbackOnly on the MessageDrivenContext interface.
C. Makeuseof the TimerService, and implement the TimedObject interface.
D. Make use of the TimerService,implement areprocess method, and annotate it with @Timeout.
E. Throw an application exception, and addtheretry-after attribute to the deployment descriptor.
Answer: C, D
QUESTION: 27
Given a set of CMT bean methods with the following transaction attributes: Method
M1=SUPPORTS Method M2=REQUIRED Method M3=NOT_SUPPORTED Method M4=REQUIRES_NEW And the following method invocation sequence: Method M1 invokes Method M2 Method M2 invokes Method M3 Method M1 invokes Method M4 If Method M1 is invoked by a method that does NOT have a transaction context, which describes a possible scenario?
A. Method M1notransaction MethodM2new transaction Method M3no transaction MethodM4newtransaction
B. Method M1notransaction Method M2Container throws EJBTransactionRequiredException
C. MethodM1new transaction Method M2runs in same transaction as M1 Method M3Container throws TransactionNotSupportedException
D. Method M1no transaction Method M2new transaction Method M3Container throws TransactionNotSupportedException
Answer: A
QUESTION: 28 OldBarBean is a stateless session bean written to the EJB 2.1 API with remote home interface. OldBarHome and remote component interface OldBar. FooBean is a stateless session bean written to the EJB 3.0 API. OldBarBean and FooBean are the only EJBs packaged in the ejb-jar. The FooBean portion of the ejb-jar. xml also declares an ejb-ref whose ejb-ref-name is ejb/oldBar. The ejb-ref is linked to OldBarBean. There are no other ejb dependencies defined. A business method foo in FooBean needs to access OldBarBean. Which is portable code to achieve this goal?
A. .Remote
private OldBar oldBar;
B. public void fooQ { try {
InitialContext ic = new InitialContextO; Object obj = ic.lookup(“ejb/oldBar”);
OldBarHome OldBarHome =
(OldBarHome) PortableRemoteObject.narrow(obj, OldBarHome.class);
OldBar oldBar = oldBarHome.createO;
C. @EJB private OldBarHome OldBarHome;
public void fooQ {
try {
OldBar oldBar = oldBarHome.createQ;
D. public void fooQ {
try {
InitialContext ic = new InitialContextO; OldBarHome OldBarHome =
(OldBarHome) ic.lookup(“ejb/oldBar”); OldBar oldBar = oldBarHome.createQ;
Answer: C
QUESTION: 29 DRAG DROP Click the Task button. A Department entity is in a one-to-many relationship with an Employee entity. A developer has been asked to write a Java Persistence query to update the set of employees who are in the department ‘HR’ by setting their department to null. Construct a query using the Java Persistence query language to perform this task. Construct a valid Java Persistence query by dragging and dropping the syntax fragements.
Answer: C
QUESTION: 30 A developer implemented a Java class called Store. The class is annotated correctly to act as an entity. The developer created a stateless session bean to create, lookup, and remove Store objects. This session bean has a container-managed entity manager injected into field em and a removeStore method with transaction attribute REQUIRED. Given the following code :
32.
public void re move St ore (St ore store) {
33.
em.remove(store); 34.}
What is a possible reason that an HlegalArgumentException is thrown at Line 33
when the removeStore method is called by a remote client?
A. Thepassedobject is NOT serializable.
B. Thepassed object is NOT found inthedatabase.
C. The passed object is NOT managed by the entity manager.
D. There is no active transaction to manage the database removal.
Answer: C
QUESTION: 31 A developer is designing a Java Persistence application that is mapped to a set of existing tables. This set includes table EMPLOYEE, DEPARTMENT, and PROJECT. Tables EMPLOYEE and DEPARTMENT do NOT define any foreign key constraints to table PROJECT. Table PROJECT defines foreign key constraints with references to tables EMPLOYEE and DEPARTMENT and an extra column called COST. The table EMPLOYEE is mapped to an entity Employee and the table DEPARTMENT to an entity Department. How can the table PROJECT be mapped so the persistence application can be portable?
A. Such sets of tables cannotbemappedandkeep the application portable.
B. Map thetablePROJECT asasecondary table for either the Employee or Departmententity.
C. Map the table PROJECT to bidirectional many-to-many relationships between the Employeeand Departmentusing a Java. util.Mapas the type ofthefield or property.
D. Mapthe tablePROJECT to an entity Projectwith afield or property cost mappedto thecolumn COST and one-to-many relationshipstothis entity in the Employee and the Department.
Answer: D
QUESTION: 32 A CMT session bean named MrBean contains a method storeStuff which is annotated as follows:
22.
@TransactionAttributeO”ransactionAttributeType.REQUIRES_NEW)
23.
public void storeStuffO {
All other methods of this bean have no transaction annotations. Given the following part
of an ejbjar.
xml:
23.
<container-transaction>
24.
<method>
25.
<ejb-name>MrBean</ejb-name>
26.
<method-name>*</method-name>
27.
</method>
28.
<transaction-attribute>NotSupported</transaction-attribute>
29.
</container-transaction>
Which statement is correct about the methods in MrBean?
A. Allmethods of MrBean have transaction attribute REQUIRED.
B. All methodsofMrBean have transactionattribute NONSUPPORTED.
C. MethodstoreStuffhastransactionattributeREQUIRES_NEWandthe other methods have
transaction attribute REQUIRED.
D. Method storeStuff has transaction attribute NONSUPPORTED and the other
methods have transaction attribute REQUIRED.
E. Method storeStuff has transaction attribute REQUIRES NEWandthe other
methodshavetransaction attribute NOT SUPPORTTED.
Answer: B
QUESTION: 33 A developer writes an interceptor class called Foolnterceptor containing the following Aroundlnvoke method:
11.
@Aroundlnvoke
12.
public Object intercept(lnvocationContext ctx) {
13.
return “intercepted”; 14.}
Foolnterceptor is applied to a business method in a stateless session bean:
11.
@lnterceptors(Foolnterceptor.class)
12.
public String testzero(int i) {
13.
return (i == 0) ? “zero””not zero”;
14.
}
Which describes the result when a client invokes the testzero method with a value of 1?
A. The intercept method is NEVER invoked.
B. The clientreceivesareturnvalueof “zero”.
C. The client receivesa returnvalue of “not zero”.
D. The client receivesareturn value of “intercepted”.
Answer: D
QUESTION: 34 A developer implements a session bean which acts as a session facade for an application. This means that clients will only see this session bean’s interface which offers the application interface. There are three distinct roles known at development time”user”, “admin”, and “guest”. The majority of the methods will be used by role “user”. All methods must have role permissions active and roles may be added or changed in the future. Which two scenarios are correct? (Choose two.)
A. The developer annotates the bean class with @PermitAII and annotates the methods used by role”guest” or “admin” individually.
B. The developer annotates the bean class with @DenyAII and annotates the methods used by role”user”, “guest”, or “admin” individually.
C. The developer defines individual method permissions for the methods used by roles “user”,”guest”, and “admin” in the deployment descriptor.
D. The developer annotates the bean class with @RolesAllowed(“user”) and annotates the methods used by role “guest” or “admin” individually.
E. Thedeveloper defines a method permission with method name “*” and role “user” and adds individual method permissions for the methods used by roles “guest” and “admin” in the deployment descriptor.
Answer: D, E
QUESTION: 35 A User entity is in a one-to-many relationship with a Book entity. Assume that a developer has a function fetchBook(String title) that fetches a Book entity with the given title title. Also assume that the developer has an entity manager em. Which query can be used to return the user that holds the book titled “Java”?
A. em.createQueryfSELECT u FROM User u where :great IN u.books.title”).setParameter(“great”,”Java”)
B. em.createQuery(“SELECT u FROM User u where :great IN
C. books”). setParameter(“great”,fetchBook(“Java”))
D. em.createQuery(“SELECT u FROM User u where :great MEMBER OF
E. books.title”). setParameter(“great” .”Java”)
F. em.createQuery(“SELECT u FROM User u where :great MEMBER OF
G. books”). setParameter(“great”,fetchBook(“Java”))
Answer: D
QUESTION: 36 Given: A session bean Foo uses container-managed transactions The container throws a javax.transaction.TransactionRolledBackException when the doStuff method runs. Which transaction attribute can the doStuff method have for this to occur?
A. NEVER
B. MANDATORY
C. REQUIRES_NEW
D. NOT SUPPORTED
Answer: B
QUESTION: 37 Within a Java EE environment, which annotation can be used to inject an entity manager factory?
A. .Entity
B. .Factory
C. @JTAFactory
D. @PersistenceUnit
E. .PersistenceContext
Answer: D
QUESTION: 38
Given this code snippet from a JMS message-driven bean class X:
11.
public XQ { System, out. print(“1 “); }
12.
public void onMessagefMessage m) throws Java. rmi. RemoteException
13.
try {
14.
TextMessage tm = (TextMessage) m;
15.
String text = tm.getText0;
16.
System, out. print(“2 “);
17.
} catch (JMSException e) {
18.
throw new java. rmi. RemoteExceptionQ; 19.}
20.}
When this bean class handles a message, which is correct?
A. After a messagedelivery theresultis1.
B. Aftera message delivery the resultis2.
C. Aftera message delivery the result is12.
D. Afteramessage delivery an exception isthrown.
E. After a message delivery the resultisunpredictable.
F. This isNOTanEJB3.0 compliant bean.
Answer: F
QUESTION: 39
Which statement is true about the primary key of a Java Persistence entity?
A. The primary key cannot be overriden by a mapping descriptor.
B. The location of the primary key defines the topmost entity class in the hierarchy.
C. If property-based access is used, the properties of the primary key class must be public or protected.
D. At least part of a primary key must be defined in the class that is the topmost class of an entity which is defined by a hierarchy of classes.
Answer: C
QUESTION: 40 A session bean calls the setRollbackOnly method on the EJBContext interface within a business method with an active transaction. Which two are correct? (Choose two.)
A. The transaction timeout is immediately disabled.
B. The container will ensure that the transaction will never commit.
C. The bean must have started the current transaction for this to be legal.
D. The bean must have bean-managed transaction demarcation for this to be legal.
E. Thebean must have container-managed transaction demarcation for this to be legal.
Answer: B, E
QUESTION: 41
Which statement about entity manager is true?
A. A container-managed entity manager must be a JTA entity manager.
B. An entity manager injected into session beans can use either JTA or resource-local transaction control.
C. An entity manager created by calling the EntityManagerFactory.createEntityManager method always uses JTA transaction control.
D. An entity manager obtained through resource injection in a stateful session bean can use a resource-local EntityTransaction for transaction control
Answer: A
QUESTION: 42
A Java Persistence application uses a Version attribute to manage concurrent updates.
Which is true?
A. The Version attribute must have a public access type.
B. The Version attribute is used by the persistence provider.
C. A separate Version attribute must be specified for each class in the inheritance hierarchy.
D. A separate Version column must be specified for each table mapped to the entity.
Answer: B
QUESTION: 43 A developer writes a stateful session bean FooBarBean with two local business interfaces Foo and Bar. The developer wants to write a business method called getBarfor interface Foo that returns a Bar reference to the same session bean identity on which the client invokes getBar. Which code, when inserted on Line 12 below, implements the getBar method with the wanted behavior? 10..Resource SessionContext sessionCtx;
11.
public BargetBarOJ
12.
13.}
A. return(Bar)this;
B. return(Bar) new FooBarBeanQ;
C. return (Bar) sessionCtx.lookup(“FooBarBean”)
D. return (Bar) sessionCtx.getBusinessObject(Bar.class);
E. InitialContextic= new InitialContextQ;
return (Bar) ic.lookup(“java:comp/env/ejb/FooBarBean”);
Answer: D
QUESTION: 44 Which statement about the combination of mapping defaults, annotations, and XML descriptors is correct?
A. All mapping annotations must always be processed by the persistence provider.
B. Some annotations, like the @Entity annotation, must always be processed by the persistence provider.
C. The mapping information for an entity class specified by annotations and in XML
descriptors must be distinct.
D. If multiple entity listeners are defined, the order in which they are invoked can be
defined or overwritten in the XML descriptor.
Answer: D
QUESTION: 45 A developer wants to release resources within a stateless session bean class. The cleanup method should be executed by the container before an instance of the class is removed. The deployment descriptor is NOT used. Which three statements are correct? (Choose three.)
A. The cleanup method may declare checked exceptions.
B. The cleanupmethodmusthave noarguments andreturn void.
C. The cleanup method isexecuted inan unspecifiedtransactionand security context.
D. The developer should mark the cleanup methodwiththe @PreDestroy annotation.
E. The developershouldmark thecleanupmethodwiththe @PostDestroy annotation.
F. Thecleanup method is executed inthetransactionandsecurity context ofthelast business method invocation.
Answer: B, C, D
QUESTION: 46
Given code snippets from two files:
7.
public class Dog {
8.
public void onMessage(Message m) { System, out. print(“1 “);
9.
1
And
10.
@MessageDriven
11.
class MessageDog extends Dog implements MessageDrivenBean
12.
MessageDog(Message m){ System, out. print(“2 “); }
13.}
Which four code changes, when used together, create a valid JMS message-driven bean?
(Choose four.
A. Make class MessageDog public.
B. Make the MessageDog constructor no-arg.
C. Make the MessageDog constructor public.
D. Move the onMessage method to class MessageDog.
E. Change MessageDog so that it is NOT a subclass of Dog.
F. Make class MessageDog implement MessageListener instead of MessageDrivenBean.
Answer: A, B, C, F
QUESTION: 47 A developer writes a stateless session bean FooBean with one remote business interface FooRemote containing one business method foo. Method foo takes a single parameter of application-defined type MyData.
11.
public class MyData implements Java. io.Serializablej
12.
int a; 13.}
Method foo is implemented within the FooBean class as:
11.
public void foo(MyData data) {
12.
data.a = 2; 13.}
Another session bean within the same application has a reference to FooRemote in
variable fooRef and calls method foo with the following code:
11.
MyData data = new MyDatafJ;
12.
data.a = 1;
13.
fooRef.foo(data);
14.
System, out. println(data. a);
What is the value of data, a when control reaches Line 14 of the client ?
A. 0
B. 1
C. 2
D. either1or 2
Answer: B
QUESTION: 48
EJB 3.0 containers must provide a specific subset of which two APIs? (Choose two.
A. JSP APIs
B. JavaMailAPIs
C. JAX-WS APIs
D. Java CardAPIs
E. Sun Studio APIs
Answer: B, C
QUESTION: 49
Given the following code in an EJB 3.0 session bean:
10.
@Resource(name=”jdbc/employeeDB”)
11.
private DataSource dataSource;
12.
13.
public void lookupEmployee(String id) {
14.
InitialContext ic = new InitialContextO;
15.
// insert code here
16.
DataSource ds = (DataSource) obj;
17.}
Which code, inserted at Line 15, portably looks up the injected resource?
A. Object obj = ic.lookup(“employeeDB”);
B. Object obj = ic.lookup(“dataSource”);
C. Object obj = ic.lookup(“jdbc/employeeDB”);
D. Object obj = ic.lookup(“javacomp/env/employeeDB”);
E. Object obj = ic.lookup(“java:comp/env/jdbc/employeeDB”);
Answer: E
QUESTION: 50 Which Java Persistence query uses the aggregate function correctly, assuming that chairs field is of type int?
A. SELECT ANY(r. chairs) FROM Room r
B. SELECT NEW Integer(MAX(r. chairs)) FROM Room r
C. SELECT r FROM Room r WHERE r.chairs > AVG(r.chairs)
D. SELECT c FROM Chair c WHERE LOCATE (c.type, lazyboy) > -1
Answer: B
QUESTION: 51
A session bean’s business method throws an exception during execution. Which two are responsibilities of the Bean Provider when throwing the exception? (Choose two.)
A. For application exceptions, ensure that if the current transaction commits there will be no loss of data integrity.
B. For application exceptions, ensurethatthe current transaction will commit.
C. For system errors, when the client is remote, throw a java.rmi.RemoteException that wraps the original exception.
D. For checked exceptions from which the bean cannot recover, throw an EJBException that wraps the original exception.
Answer: A, D
QUESTION: 52 A developer creates the following session bean: 10..Stateless
11.
@RolesAllowed(“SECRET”)
12.
public class MyBean implements Mylnterface {
13.
public void methodAOJ}
14.
@PermitAII
15.
public void methodB0 {}
16.
@DenyAII
17.
public void methodC0 {}
18.
} No deployment descriptor is supplied. Which two statements are true? (Choose two.)
A. Auserin the role “SECRET” will be able to accessallof the methods.
B. A user inthe role”FOO” will be able to accessmethodAandmethodB.
C. A user withoutanyrolewill beable to accessmethodBbut NOTmethodA.
D. A user in the role “SECRET”willbe able to accessmethodA andmethodB.
E. A userintherole “SYSADM” will be abletoaccessmethodA,methodB, and methodC.
Answer: C, D
QUESTION: 53
A developer wants to create a Java Persistence query to perform a bulk update operation on five different entity classes. All of these classes have a field called name. These classes have the following relationships: Harrier extends Dog and Dog extends Animal Vet extends Doctor What is the minimum possible number of operations required to change the value of the name field for all of the entities in all five classes?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: B
QUESTION: 54
A developer writes an enterprise application and packages it into an .ear file. The application contains two persistence units defined at the .ear level with persistence unit names FooPU and BarPU. The application also contains an ejb-jar with one stateless session bean. Which code, when added to the stateless session bean class, injects an EntityManagerFactory at runtime?
A. PersistenceUnit private EntityManagerFactory emf; B. PersistenceContext private EntityManagerFactory emf;
C. PersistenceUnit(unitName=”BarPU”) private EntityManagerFactory emf;
D. Resource(name=”BarPU”, type=EntityManagerFactory.class) private EntityManagerFactory emf;
Answer: C
QUESTION: 55 A developer is working on a user registration application using EJB 3.0. A business method registerUser in stateless session bean RegistrationBean performs the user registration. The registerUser method executes in a transaction context started by the client. If some invalid user data causes the registration to fail, the client invokes
registerUser again with corrected data using the same transaction. Which design can
meet this requirement?
A. Have registerUser method call EJBContext.setRollbackOnlyOmethodafter registration fails.
B. Have registerUser method throw javax.ejb.EJBTransactionRequiredExceptionafterregistration fails.
C. HaveregisterUser method throw EJBException without marking the transaction for rollback, after registration fails.
D. Create an application exception withtherollbackattributeset to falseandhave registerUser method throwit afterregistration fails.
Answer: D
QUESTION: 56
Which statement is true about the Timer service in an EJB 3.0 stateless session bean?
A. The timeout callback method contains the business logic that handles the timeout event.
B. The timeout callback method must be declared as a business method in business interfaces.
C. The timeout callback method can throw application exceptions to report business logic failures.
D. A bean class can implement multiple timeout callback methods, each associated with a different timer.
Answer: A
QUESTION: 57 A developer wants to create a portable EJB 3.0 application that includes the following class definition for the Entity Account: 11..Entity
12.
@Entityl_isteners(com. acme.AlertMonitor. class)
13.
public class Account {
14.
// more code here
15.
@PrePersist
16.
protected void validateCreate0 {/* more code here */} 17.}
Which statement is correct?
A. The validateCreate method may NOT throwruntimeexceptions.
B. ThevalidateCreate method can invoke the EntityManager.flush operation.
C. Methods oftheclass com.acme.AlertMonitor annotatedwithcallback annotationsmusttake an Object or Account instance astheonly argument.
D. The above class definition is NOT correct. An entity cannot defineacallback methodlike PrePersistand use the EntityListeners annotationatthe same time.
Answer: C
QUESTION: 58
Given this code snippet from a JMS message-driven bean class X:
11.
public XQ { System, out. print(“1 “); }
12.
public void onMessagefMessage m) throws Java. rmi. RemoteException
13.
try {
14.
TextMessage tm = (TextMessage) m;
15.
String text = tm.getText0;
16.
System, out. print(“2 “);
17.
} catch (JMSException e) {
18.
throw new java. rmi. RemoteExceptionQ;
19.}
20.}
When this bean class handles a message, which is correct?
A. After a messagedelivery theresultis1.
B. Aftera message delivery the resultis2.
C. Aftera message delivery the result is12.
D. Afteramessage delivery an exception isthrown.
E. After a message delivery the resultisunpredictable.
F. This isNOTanEJB3.0 compliant bean.
Answer: F
QUESTION: 59 FooBean is an EJB 3.0 session bean that can make valid use of UserTransaction. Which is guaranteed to work in an EJB container for FooBean to obtain the UserTransaclion object?
A. Invoke a method on a SessionContext that returns a UserTransaction object.
B. Perform JNDI lookup with name “java:/UserTransaction” on an InitialContext.
C. Perform JNDI lookup with the name “jdbc/UserTransaction” on an InitialContext.
D. Use the @TransactionManagement annotation to inject an instance variable of type UserTransaction in a bean class.
Answer: A
QUESTION: 60
An Application Assembler is given the following stateless session bean:
10..Stateless public class MyBean implements Mylnt {
11.
@RolesAllowed(“SECRET”)
12.
public void methodA(int x) {}
13.
public void methodA(String y) {}
14.
public void methodB(String z) {}
15.
}
A deployment descriptor is also supplied, a portion of which reads as follows:
20.
<method-permission>
21.
<role-name>AGENT</role-name>
22.
<method>
23.
<ejb-name>MyBean</ejb-name>
24.
<method-name>methodA</method-name>
25.
</method>
26.
</method-permission> Which statement is true?
A. A client in any rolewill beabletoaccess anyof themethods.
B. Aclient inthe role “AGENT” willbeable to access any ofthemethods.
C. A client in therole”SECRET” will be able to access any of the methods.
D. A client in the role “AGENT” will be abletoaccess methodB and
methodA(String), but not methodA(int).
E. Aclient in the role “SECRET” will beableto access methodA(int) and methodB,
but NOT methodA(String).
Answer: B
QUESTION: 61
A deployer is given the following session bean:
10..Stateless
11.
@RolesAllowed(“BATH”)
12.
@DeclareRoles(“SOAP”)
13.
public class ShowerBean implements Shower {
14.
public void plugO {} 15.}
and the following associated excerpt from the ejb-jar.xml descriptor file:
20.
<assembly-descriptor>
21.
<security-role>
22.
<role-name>TOWEL</role-name>
23.
</security-role>
24.
</assembly-descriptor>
Which roles is the deployer expected to map to users or user groups?
A. TOWEL
B. BATHandSOAP
C. BATH and TOWEL
D. BATH and SOAP and TOWEL
Answer: D
QUESTION: 62 A developer wants to release resources within a stateless session bean class. The cleanup method should be executed by the container before an instance of the class is removed. The deployment descriptor is NOT used. Which three statements are correct? (Choose three.)
A. The cleanup method may declare checked exceptions.
B. The cleanupmethodmusthave noarguments andreturn void.
C. The cleanup method isexecuted inan unspecifiedtransactionand security context.
D. The developer should mark the cleanup methodwiththe @PreDestroy annotation.
E. The developershouldmark thecleanupmethodwiththe @PostDestroy annotation.
F. Thecleanup method is executed inthetransactionandsecurity context ofthelast business method invocation.
Answer: B, C, D
QUESTION: 63
Which statement is true about the Timer service in an EJB 3.0 stateless session bean?
A. The timeout callback method contains the business logic that handles the timeout event.
B. The timeout callback method must be declared as a business method in business interfaces.
C. The timeout callback method can throw application exceptions to report business logic failures.
D. A bean class can implement multiple timeout callback methods, each associated with a different timer.
Answer: A
QUESTION: 64 Which is a valid way of injecting a container-managed transaction-scoped persistence context into an EJB 3.0 session bean assuming the application contains only one persistence unit?
A. @PersistenceUnit public EntityManager em;
B. @PersistenceContext private EntityManager em;
C. @TransactionManagement(TransactionManagementType. CONTAINER) public EntityManager em;
D. @Resource(name=”persistence/em”, authenticationType=AuthenticationType. CONTAINER) protected EntityManager em;
Answer: B
QUESTION: 65 A developer wants to perform programmatic access control inside EJB 3.0 session beans. This is needed because some permissions can be determined only at application runtime. Which method achieves this goal?
A. javax.ejb.EJBContext.getRollbackOnlyO
B. java.lang.SecurityManager.checkAccess(Thread t)
C. javax. interceptor. InvocationContext. getTargetO
D. javax. ejb. SessionContext.isCallerlnRole(String roleName)
E. javax. servlet. http. HttpServletRequest. getUserPrincipalQ
Answer: D
QUESTION: 66
Given the following entity class:
11.
@Entity public class Customer)
12.
@ld private int id;
13.
private transient String name;
14.
private Java. math. BigDecimal grossAmmount;
15.}
Which mapping annotation can be added to the fields of this entity?
A. @Columntothe name field
B. @Embeddedldto theid field
C. @Basictothe grossAmmountfield
D. @JoinColumnstothe grossAmmount field
Answer: C
QUESTION: 67 A developer writes a stateless session bean FooBean with one remote business interface FooRemote containing one business method foo. Method foo takes a single parameter of application-defined type MyData.
11.
public class MyData implements Java. io.Serializablej
12.
int a;
13.}
Method foo is implemented within the FooBean class as:
11.
public void foo(MyData data) {
12.
data.a = 2;
13.}
Another session bean within the same application has a reference to FooRemote in
variable fooRef and calls method foo with the following code:
11.
MyData data = new MyDatafJ;
12.
data.a = 1;
13.
fooRef.foo(data);
14.
System, out. println(data. a);
What is the value of data, a when control reaches Line 14 of the client ?
A. 0
B. 1
C. 2
D. either1or 2
Answer: B
QUESTION: 68 Given :
I. public class MyExceplion extends Exception {}
The remote business interface Foo declares a method workQ:
5. public void work0 throws MyException;
The bean class FooBean contains the following:
10..Stateless
II. @Remote(Foo.class)
12.
public class FooBean {
13.
public void workQ throws MyException {
14.
throw new MyException0;
15.}
Which exception can be received in the client as a result of invoking the work method?
A. a MyException
B. ajavax.ejb.ConcurrentAccessException
C. a javax. ejb. EJBException that wraps an instance of MyException as the rootcause
D. aJava.rmi. RemoteExceptionthatwraps an instance ofMyExceptionas the root cause
Answer: A
QUESTION: 69 A developer is working on a project that includes both EJB 2.1 and EJB 3.0 session beans. A lot of business logic has been implemented and tested in these EJB 2.1 session beans. Some EJB 3.0 session beans need to access this business logic. Which design approach can achieve this requirement?
A. Add adapted home interfaces to EJB 3.0 session beans to make EJB 3.0 and EJB 2.1 session beans interoperable.
B. Add EJB 3.0 business interfaces to existing EJB 2.1 session beans and inject references to these business interfaces into EJB 3.0 session beans.
C. No need to modify existing EJB 2.1 session beans. Use the @EJB annotation to inject
a reference to the EJB 2.1 home interface into the EJB 3.0 bean class.
D. No need to modify existing EJB 2.1 session beans. Use the @EJB annotation to inject a reference to the EJB 2.1 component interface into the EJB 3.0 bean class.
Answer: C
QUESTION: 70 A developer wants to implement a relationship between Company and Department entity classes. Every department belongs to one company, and one company has several departments. In this application it is essential to quickly determine which company a department belongs to and to also easily access all departments of a given company. Which two declarations provide a solution to these requirements? (Choose two.)
A. In class Department
@ManyToOne
private Company company;
B. In class Department
@OneToMany private
Company company;
C. In class Department:
@OneToMany(mappedBy=”department”) private Collection<Company> companies;
D. In class Company:
@ManyToOne(mappedBy=”company”)
private Collection<Department> departments;
E. In class Company:
@OneToMany(mappedBy=”company”)
private Collection<Department> departments;
Answer: A, E
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