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
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.
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
D. In class Company: @ManyToOne(mappedBy="company") private Collection
E. In class Company: @OneToMany(mappedBy="company") private Collection
Given the following client-side code that makes use of the session bean Foo:
10.
@EJB Foo beanl;
11.
@EJB Foo bean2; //more code here
20.
booleantestl = beanl.equals(beanl);
21.
booleantest2 = beanl.equals(bean2);
Which two statements are true? (Choose two)
A. If Foo is stateful, testl is true, and test2 is true,
B. If Foo is stateful, testl is true, and test2 is false,
C. If Foo is stateless, testl is true, and test2 is true.
D. If Foo is stateful, testl is false, and test2 is false,
E. If Foo is stateless, testl is true, and test2 is false.
F. If Foo is stateless, testl is false, and test2 is false.
A developer implements a session bean with a method doStuff which behaves differently depending on the caller's security role. Only users in security roles "ADMIN" and "USER" are allowed to call the method. Assume that there is no security-related metadata in the deployment descriptor. Which two, taken in combination, are appropriate to accomplish this? (Choose two.)
A. Annotate method doStuff with @PermitAII.
B. AnnotatemethoddoStuff with@RolesAllowed({"ADMIN","USER"})
C. If EJBContext.getCallerPrincipal returns role "ADMIN", implement thebehaviorfor users in role ADMIN.
D. If EJBContext.isCallerlnRole("ADMIN") returns true, implement the behavior defined for users in role "ADMIN".
You have been asked to develop business methods for an enterprise bean to fulfill the following objective:
If the JDBC connection is NOT available, the current state of the shopping cart session must be serialized. A serialized state must be written to a text file using a java.io.PrintWriter. Data must be shared with a Web services end point. Logging
information must be displayed in ajavax.swing.JPanel component.
Which is true?
A. The requirements can be fullfilled only in sessionbeans.
B. Therequirementscan befulfilled only in message-driven beans.
C. Allof the requirements can be fulfilled using either session beans or message-driven beans.
D. None of the requirements can be fulfilled using either session beans or message-driven beans.
E. Bothsession beansandmessage-driven beans canfulfillsomebutnotalloftherequirements.
A developer is creating an entity which is mapped to a table that has a primary key constraint defined on two character columns and would like to use mapping defaults as much as possible to simplify the code Which two mapping options can be chosen? (Choose two.)
A. Use an @ld property that constructs a private field as a concatenation of two columns.
B. Use a separate class to map those two columns and use an @ldClass annotation to denote the primary key field or property in the entity.
C. Use a separate @Embeddable class to map those two columns and use an @Embeddedld annotation to denote a single primary key field or property in the entity.
D. Use a separate @Embeddable class to map those two columns and add two fields or properties to the entity, each marked as @ld, that correspond to the fields or properties in the embeddable class.
E. Use a separate class to map those two columns. Specify that class using @ldClass annotation on the entity class. Add two fields or properties to the entity, each marked as @ld, that correspond to the fields or properties in that separate class.
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.
21.
22.
23.
24.
25.
26.
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).
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.
21.
22.
23.
24.
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
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.
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