Oracle 1Z0-895 valid exam dumps : Java EE 6 Enterprise JavaBeans Developer Certified Expert

You are writing a client that sends a message to a JMS queue. The client includes the following code snippet:

• A. You could add more name-value pairs to the message body of the MapMessage if they were required by your application.
• B. The message is sent using non-default deliver mode, priority, and expiration time values.
• C. The message can be consumed by durable subscriber.
• D. In the first line, the argument to the createProducer method needs to be cast to a Destination.

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Which two annotations can be applied at the class, method, and field levels? (Choose two.)

• A. @Resource
• B. @Init
• C. @RolesAllowed
• D. @EJB
• E. @PostActivate

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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.Serialization {
12.
int a;
13.
}
Methods foo is implemented with 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 MyData();
12.
data.a = 1;
13.
fooRef.foo(data);
14.
System.out.printIn(data.a);
What is the value of data.a when control reaches Line 14 of the client?

• A. 0
• B. 2
• C. 1

A developer implements a CMT session bean with a method storeBoth which inserts data both a related database and an LDAP server. The relational database supports transactions while the LDAP system does NOT.
Given that both updates should succeed or be rolled back, while is the best solution?

• A. Define the transaction attribute of the method storeBoth as REQUIRED. The container manages the transactions and will roll back modifications if something goes wrong in either database insert or LDAP insert.
• B. Implement the SessionSynchoronization interface in the session bean. In the afterCompleteion method, the LDAP inserts are rolled back if false is passed as an argument to the afterCompletion method.
• C. Define the transaction attribute of the method storeBoth as REQUIRED_NEW. Carry out the database insert first. Subsequently, execute the LDAP inserts, catching LDAP exceptions. If exceptions are raised, call the SessionContext.setRollBackOnly method.
• D. Define the transaction attribute of the method storeBoth as REQUIRED_NEW. Carry out the LDAP insert first. If SessionContext.getRollBackOnly returns false, execute the database inserts, catching SQL exceptions. If exceptions are raised, call the SessionContext.setRollBackOnly.

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Which statement about message-driven beans is correct?

• A. If a message-driven bean is associated with a JMS queue, each bean instance in the pool will receive each message sent to the queue.
• B. If a message driven bean is associated with a JMS durable subscription, each bean instance in the pool will receive each message sent to the durable subscription.
• C. When dispatching messages to message beam instances the container must preserve the order in which messages arrive.
• D. Each message-driven bean instance will be invoked by only one thread at a time.