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Exam Code: 1Z0-228Exam Name: Peoplesoft Enterprise 9 General Ledger
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NO.1 Given the code fragment:
DataFormat df;
Which statement defines a new Dateformat object that displays the default date format for the UK
Locale?
A. df = DateFormat.getdatDataInstance (DateFormat.DEFAULT, Locale (UK));
B. df = DateFormat.getdatDataInstance (DateFormat.DEFAULT, UK);
C. df = DateFormat.getdatDataInstance (DateFormat.DEFAULT, Locale.UK);
D. df = new DateFormat.getdatDataInstance (DateFormat.DEFAULT, Locale.UK);
E. df = new DateFormat.getdatDataInstance (DateFormat.DEFAULT, Locale (UK));
Answer: C
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NO.2 Which two demonstrate the valid usage of the keyword synchronized?
A. interface ThreadSafe {
synchronized void doIt();
}
B. abstract class ThreadSafe {
synchronized abstract void doIt();
}
C. class ThreadSafe {
synchronized static void soIt () {}
}
D. enum ThreadSafe {
ONE, TWO, Three;
Synchronized final void doIt () {}
}
Answer: C
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NO.3 Given:
public class DoubleThread {
public static void main(String[] args) {
Thread t1 = new Thread() {
public void run() {
System.out.print("Greeting");
}
};
Thread t2 = new Thread(t1); // Line 9
t2.run();
}
}
Which two are true?
A. A runtime exception is thrown on line 9.
B. No output is produced.
C. Greeting is printed once.
D. Greeting is printed twice.
E. No new threads of execution are started within the main method.
F. One new thread of execution is started within the main method.
G. Two new threads of execution are started within the main method.
Answer: C,E
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NO.4 Given the fragment:
public class CustomerApplication {
public static void main (String args[]) {
CustomerDAO custDao= new CustomerDAOMemoryImpl(); // Line 3
// o t he r m e t hod
}
}
Which two valid alternatives to line 3 would decouple this application from a specific
implementation of CustomerDAO?
A. CustomerDAO custDao = CustomerDAO();
B. CustomerDAO custDao = (CustomerDAO) new Object ();
C. CustomerDAO custDao = CustomerDAO.getInstance();
D. CustomerDAO custDao = (CustomerDAO) new CustomerDAOmemoryImp1();
E. CustomerDAO custDao = customerDAOFactory.getInstance();
Answer: B,E
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NO.5 Given this error message when running your application:
Exception in thread "main" java.util.MissingResourceException: Can't find bundle for base name
MessageBundle, locale
And given that the MessageBundle.properties file has been created, exists on your disk, and is
properly formatted.
What is the cause of the error message?
A. The file is not in the environment path.
B. The file is not in the classpath.
C. The file is not in the javapath.
D. You cannot use a file to store a ResourceBundle.
Answer: D
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NO.6 Sam has designed an application. It segregates tasks that are critical and executed frequently
from tasks that are non critical and executed less frequently. He has prioritized these tasks based
on their criticality and frequency of execution. After close scrutiny, he finds that the tasks designed
to be non critical are rarely getting executed.
From what kind of problem is the application suffering?
A. race condition
B. starvation
C. deadlock
D. livelock
Answer: C
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NO.7 Which method would you supply to a class implementing the Callable interface?
A. callable ()
B. executable ()
C. call ()
D. run ()
E. start ()
Answer: C
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NO.8 Given:
import java.util.*;
public class AccessTest {
public static void main(String[] args) {
Thread t1 = new Thread(new WorkerThread());
Thread t2 = new Thread(new WorkerThread());
t1.start(); t2.start; // line1
}
}
class WorkPool {
static ArrayList<Integer> list = new ArrayList<>(); // line2
public static void addItem() { // line3
list.add(1); // Line4
}
}
class WorkerThread implements Runnable {
static Object bar = new Object ();
public void run() { //line5
for (int i=0; i<5000;i++) WorkPool.addItem(); // line6
}
}
Which of the four are valid modifications to synchronize access to the valid list between threads t1
and t2?
A. Replace line 1 with:
Synchronized (t2) (t1.start();) synchronized(t1) (t2.start();)
B. Replace Line 2 with:
static CopyWriteArrayList<Integer> list = new CopyWriteArrayList<>();
C. Replace line 3 with:
synchronized public static void addItem () {
D. Replace line 4 with:
synchronized (list) (list.add(1);)
E. Replace line 5 with:
Synchronized public void run () {
F. replace line 6 with:
Synchronized (this) {for (in i = 0, i<5000, i++) WorkPool.addItem(); }
G. Replace line 6 with:
synchronized (bar) {for (int i= 0; i<5000; i++) WorkPool.addItem(); }
Answer: F
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