Questions of Test: SCBCD mock test

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1

Given 

Bean1 --> Stateful session Bean's local interface of 'bean1'
Bean2 --> Stateless Session Bean's local interface of 'bean2'
and given:
@EJB(beanName="bean1") Bean1 ref1;
@EJB(beanName="bean1") Bean1 ref2;

@EJB(beanName="bean2") Bean2 ref3;
@EJB(beanName="bean2") Bean2 ref4;

After injection has completed, what would be the output of the following code?


System.out.println(ref1.equals(ref2));
System.out.println(ref3.equals(ref4));

2

EJB supports scheduling system called Timer Service. 
Which interface must implemented by an enterprise bean to be able to be scheduled ?

3

Which of the following stateless bean definitions are correct to be able to be scheduled?

4

Which of the following statements about Timer are correct?

5

Given a Car EJB used to schedule perticular car for Maintenance, which is being sceduled as below :

 @Stateless
 public class Foo implements FooRemote{
  
   @Resource TimerService timerService;

  @Timeout
   public void maintenanceCall(){
     // maintenance appropriate Logic
   }
  
  public void ScheduleMaintenance(Integer carId, Date dayToBeScheduled){
     timerService.createTimer( dayToBeScheduled, carId.toString());
  }

  public void resceduleMaintenance(Integer carId, Date  rescheduleDate){
     //Block 1  
  }
}

What are the appropriate code to be inserted in //Block 1 to reschedule a car maintenance to a new time?

6

Given a Timer scheduled as below:

Calendar time = Calendar.getInstance();
time.add(Calendar.DATE,15);
Date initialExpiration = 
Timer timer = timerService.createTimer(time.getTime(),1000*60*60*24,"Timer1");

what will be the result of calling timer.getNextTimeout()?

7

Check if the following statement about the Timer is true or false.

If a bean calls timerService.createTimer() method in the scope of a transaction, and if the transaction rolls back, this will not affect the timer. As timers are persistent, it will stay scheduled.

8

Given 2 Session beans, Foo and Foo1

@Stateless
public class Foo implements FooRemote{
   private Foo1 foo1;

   @Resource TimerService timerService;

   @PostConstruct
   public void init(){ // block 1 }
  
   @PreDestory
   public void finish(){ // block 2 }
   
   // business method 
   public void doBusinessAction(){ // block 3 }

   @EJB
   public setFoo1(Foo1 foo1){
      //Block 4
      this.foo1 = foo1;

   }
}

Which are the legal blocks to place following code:
timerService.createTimer(expDate,"test Timer");

9

Which of the following statements about @PostConstruct callback method of an EJB are true?

10

Which of the following statements about session beans are true?
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