Oracle 1Z0-860 dumps - 100% Pass Guarantee!

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.

Which statement is true about both stateful session beans and stateless session beans?

A. Bean instances are NOT required to survive container crashes.

B. Any bean instance must be able to handle concurrent invocations from different threads.

C. A bean with bean-managed transactions must commit or roll back any transaction before returning from a business method.

D. The container passivates and activates them using methods annotated with @PrePassivate and @PostActivate annotations.

Given this code snippet from a JMS message-driven bean class named MyMDB:

11.

public MyMDBOJ System, out. print("a "); }

12.

public void onMessage(Message m) { System, out. print("b "); }

13.

@PreDestroy

14.

public void removeQ { System, out. print("c "); } The container crashes and then restarts and then the bean class handles two messages.

Which four are possible results? (Choose four.)

A. abb

B. acbb

C. aa c bb

D. aab b c

E. a bcb c

F. ababc c

A developer wants to have bookingDate stored in table BOOKING, flightNumber in table FLIGHTBOOKING, and hotelName in table HOTELBOOKING. Which code, inserted at Line 11 of class Booking, is appropiate for this strategy?

A. ©Joined

B. @SingleTable

C. @TablePerClass

D. @lnheritance(strategy=JOINED)

E. @lnheritance(strategy=SINGLE_TABLE)

F. @lnheritance(strategy=TABLE_PER_CLASS)

A Java Persistence application uses entities mapped to tables from two datasources in the same transaction. What statement is correct?

A. This is NOT possible.

B. The entities mustbepackaged into two persistence units.

C. The entitiescanbe packaged intoa singlepersistence unit

D. Theentities must be packaged usingtwo differentpersistence.xml files.