Oracle 1Z0-854 examen pratique questions et réponses

On doit faire un bon choix pour passer le test Oracle 1Z0-854. C'est une bonne affaire à choisir la Q&A de Pass4Test comme le guide d'étude, parce que vous allez obtenir la Certification Oracle 1Z0-854 en dépensant d'un petit invertissement. D'ailleur, la mise à jour gratuite pendant un an est aussi gratuite pour vous. C'est vraiment un bon choix.

Vous pouvez trouver un meilleur boulot dans l'industrie IT à travers d'obtenir le test Oracle 1Z0-854, la voie à la réussite de votre professionnel sera ouverte pour vous.

Le test Oracle 1Z0-854 est test certification très répandu dans l'industrie IT. Vous pourriez à améliorer votre niveau de vie, l'état dans l'industrie IT, etc. C'est aussi un test très rentable, mais très difficile à réussir.

Le test certification Oracle 1Z0-854 est une bonne preuve de connaissances professionnelles et la techniques. Dans l'Industrie IT, beaucoiup de humains ressource font l'accent de lesquels certificats que les volontiers obtiennent. C'est clairement que le certificat Oracle 1Z0-854 puisse augmenter la compétition dans ce marché.

Pass4Test est un site qui peut réalise le rêve de beaucoup de professionnels. Pass4Test peut vous donner un coup de main pour réussir le test Certification Oracle 1Z0-854 via son guide d'étude. Est-ce que vous vous souciez de test Certification Oracle 1Z0-854? Est-ce que vous êtes en cours de penser à chercher quelques Q&As à vous aider? Pass4Test peut résoudre ces problèmes. Les documentations offertes par Pass4Test peuvent vous provider une préparation avant le test plus efficace. Le test de simulation de Pass4Test est presque le même que le test réel. Étudier avec le guide d'étude de Pass4Test, vous pouvez passer le test avec une haute note.

Code d'Examen: 1Z0-854
Nom d'Examen: Oracle (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam)
Questions et réponses: 138 Q&As

1Z0-854 Démo gratuit à télécharger: http://www.pass4test.fr/1Z0-854.html

NO.1 this.value = value;

NO.2 }
What is the result?
A. Compilation fails because of an error in line 5.
B. A NullPointerException occurs at runtime.
C. Compilation fails because of an error in line 9.
D. A NumberFormatException occurs at runtime.
E. The value "4" is printed at the command line.
F. An IllegalStateException occurs at runtime.
Answer: B

Oracle   1Z0-854 examen   1Z0-854   1Z0-854 examen
10.Given:
10. public class Hello {
11: String title;

NO.3 Given:
1. public class Boxer1{
2. Integer i;
3. int x;
4. public Boxer1(int y) {
5. x = i+y;
6. System.out.println(x);
7. }
8. public static void main(String[] args) {
9. new Boxer1(new Integer(4));

NO.4 title = "Hello";

NO.5 int value;

NO.6 DRAG DROP
Click the Task button. ?
Answer:

NO.7 int c = super.multiply(a, b);

NO.8 }

NO.9 Hello();

NO.10 }
and:
30. SubCalc sc = new SubCalc ();
31. System.out.println(sc.multiply(3,4));
32. System.out.println(SubCalc.multiply(2,2));
What is the result?
A. Compilation fails because of an error in line 31.
B. The code runs with no output.
C. 12
D. Compilation fails because of an error in line 22.
E. An exception is thrown at runtime.
F. Compilation fails because of an error in line 21.
Answer: D

Oracle   certification 1Z0-854   certification 1Z0-854   1Z0-854 examen   1Z0-854
15.Given:
12. NumberFormat nf = NumberFormat.getInstance();
13. nf.setMaximumFractionDigits(4);
14. nf.setMinimumFractionDigits(2);
15. String a = nf.format(3.1415926);
16. String b = nf.format(2);
Which two statements are true about the result if the default locale is Locale.US? (Choose two.)
A. The value of a is 3.1415.
B. The value of a is 3.14.
C. The value of a is 3.141.
D. The value of b is 2.
E. The value of b is 2.0000.
F. The value of a is 3.1416.
G. The value of b is 2.00.
Answer: F,G

Oracle   certification 1Z0-854   certification 1Z0-854   1Z0-854 examen   1Z0-854   certification 1Z0-854
16.Click the Exhibit button.
Which statement is true about the two classes?
A. Compilation of class B will fail. Compilation of class A will succeed.
B. Compilation of class A will fail. Compilation of class B will succeed.
C. Compilation of both classes will fail.
D. Compilation of both classes will succeed.
Answer: A

Oracle examen   1Z0-854 examen   certification 1Z0-854
17.Given:
11. class ClassA {}
12. class ClassB extends ClassA {}
13. class ClassC extends ClassA {}
and:
21. ClassA p0 = new ClassA();
22. ClassB p1 = new ClassB();
23. ClassC p2 = new ClassC();
24. ClassA p3 = new ClassB();
25. ClassA p4 = new ClassC();
Which three are valid? (Choose three.)
A. p2 = p4;
B. p2 = (ClassC)p1;
C. p0 = p1;
D. p2 = (ClassC)p4;
E. p1 = p2;
F. p1 = (ClassB)p3;
Answer: C,D,F

certification Oracle   1Z0-854   1Z0-854 examen   1Z0-854 examen   1Z0-854
18.Given this method in a class:
21. public String toString() {
22. StringBuffer buffer = new StringBuffer();
23. buffer.append('<');
24. buffer.append(this.name);
25. buffer.append('>');

NO.11 }

NO.12 }

NO.13 }
What is the result?
A. null
B. An exception is thrown at runtime.
C. Compilation fails because of an error in line 5.
D. Compilation fails because of an error in line 4.
E. Compilation fails because of an error in line 1.
F. test
Answer: F

Oracle   1Z0-854 examen   1Z0-854 examen   certification 1Z0-854   certification 1Z0-854
8.DRAG DROP
Click the Task button.
Answer:

NO.14 }
and:
30. Hello c = new Hello(5);
31: System.out.println(c.title);
What is the result?
A. The code runs with no output.
B. Hello
C. Hello World 5
D. Compilation fails.
E. An exception is thrown at runtime.
F. Hello World
Answer: D

certification Oracle   1Z0-854   1Z0-854 examen   1Z0-854 examen   1Z0-854
11.Given:
10. class Line {
11. public class Point { public int x,y;}
12. public Point getPoint() { return new Point(); }
13. }
14. class Triangle {
15. public Triangle() {
16. // insert code here
17. }
18. }
Which code, inserted at line 16, correctly retrieves a local instance of a Point object?
A. Point p = (new Line()).getPoint();
B. Line.Point p = Line.getPoint();
C. Point p = Line.getPoint();
D. Line.Point p = (new Line()).getPoint();
Answer: D

Oracle examen   1Z0-854 examen   1Z0-854   1Z0-854
12.Given:
11. // insert code here
12. private N min, max;
13. public N getMin() { return min; }
14. public N getMax() { return max; }
15. public void add(N added) {
16. if (min == null || added.doubleValue() < min.doubleValue())
17. min = added;
18. if (max == null || added.doubleValue() > max.doubleValue())
19. max = added;
20. }
21. }
Which two, inserted at line 11, will allow the code to compile? (Choose two.)
A. public class MinMax<?> {
B. public class MinMax<N extends Object> {
C. public class MinMax<N extends Integer> {
D. public class MinMax<? extends Object> {
E. public class MinMax<N extends Number> {
F. public class MinMax<? extends Number> {
Answer: C,E

certification Oracle   1Z0-854 examen   1Z0-854
13.A developer is creating a class Book, that needs to access class Paper. The Paper class is deployed in
a JAR named myLib.jar.
Which three, taken independently, will allow the developer to use the Paper class while compiling the
Book class? (Choose three.)
A. The JAR file is located at $JAVA_HOME/jre/classes/myLib.jar.
B. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -d
/foo/myLib.jar Book.java
C. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that
includes /foo/myLib.jar/Paper.class.
D. The JAR file is located at $JAVA_HOME/jre/lib/ext/myLib.jar..
E. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -classpath
/foo/myLib.jar Book.java
F. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -cp
/foo/myLib.jar/Paper Book.java.
G. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes
/foo/myLib.jar.
Answer: D,E,G

Oracle   certification 1Z0-854   1Z0-854   1Z0-854
14.Given:
10. public class SuperCalc {
11. protected static int multiply(int a, int b) { return a * b;}
12. }
and:
20. public class SubCalc extends SuperCalc{
21. public static int multiply(int a, int b) {

NO.15 }
Which statement is true?
A. This code will perform well and converting the code to use StringBuilder will not enhance the
performance.
B. This code will perform poorly. For better performance, the code should be rewritten: return "<" +
this.name + ">";
C. This code is NOT thread-safe.
D. The programmer can replace StringBuffer with StringBuilder with no other changes.
Answer: D

certification Oracle   1Z0-854   certification 1Z0-854   certification 1Z0-854
19.DRAG DROP
Click the Task button.
Answer:
20.Click the Exhibit button.
What two must the programmer do to correct the compilation errors? (Choose two.)
A. change the wheelCount variable in Car to protected
B. insert a call to this() in the MeGo constructor
C. insert a call to this() in the Car constructor
D. insert a call to super(vin) in the MeGo constructor
E. insert a call to super() in the MeGo constructor
F. change line 3 in the MeGo class to super.wheelCount = 3;
Answer: A,D

Oracle   1Z0-854   1Z0-854   1Z0-854 examen   1Z0-854   1Z0-854

NO.16 public Hello() {

NO.17 Given:
12. import java.io.*;
13. public class Forest implements Serializable {
14. private Tree tree = new Tree();
15. public static void main(String [] args) {
16. Forest f = new Forest();
17. try {
18. FileOutputStream fs = new FileOutputStream("Forest.ser");
19. ObjectOutputStream os = new ObjectOutputStream(fs);
20. os.writeObject(f); os.close();
21. } catch (Exception ex) { ex.printStackTrace(); }
22. } }
23.
24. class Tree { }
What is the result?
A. An exception is thrown at runtime.
B. An instance of Forest is serialized.
C. An instance of Forest and an instance of Tree are both serialized.
D. Compilation fails.
Answer: A

Oracle   1Z0-854   1Z0-854 examen   1Z0-854   certification 1Z0-854

NO.18 return c;

NO.19 return buffer.toString();

NO.20 Given:
1. interface TestA { String toString(); }
2. public class Test {
3. public static void main(String[] args) {
4. System.out.println(new TestA() {
5. public String toString() { return "test"; }
6. });
7. }

NO.21 }

NO.22 Given:
20. public class CreditCard {
21.
22. private String cardID;
23. private Integer limit;
24. public String ownerName;
25.
26. public void setCardInformation(String cardID,
27. String ownerName,
28. Integer limit) {
29. this.cardID = cardID;
30. this.ownerName = ownerName;
31. this.limit = limit;
32. }
33. }
Which statement is true?
A. The ownerName variable breaks encapsulation.
B. The class is fully encapsulated.
C. The cardID and limit variables break polymorphism.
D. The code demonstrates polymorphism.
E. The setCardInformation method breaks encapsulation.
Answer: A

certification Oracle   certification 1Z0-854   certification 1Z0-854   1Z0-854 examen

NO.23 Which three statements concerning the use of the java.io.Serializable interface are true? (Choose
three.)
A. Objects from classes that use aggregation cannot be serialized.
B. The values in fields with the transient modifier will NOT survive serialization and deserialization.
C. It is legal to serialize an object of a type that has a supertype that does NOT implement
java.io.Serializable.
D. The values in fields with the volatile modifier will NOT survive serialization and deserialization.
E. An object serialized on one JVM can be successfully deserialized on a different JVM.
Answer: B,C,E

Oracle   1Z0-854   1Z0-854   1Z0-854 examen   certification 1Z0-854

NO.24 public Hello(int value) {

NO.25 title += " World";

NO.26 Which two code fragments will execute the method doStuff() in a separate thread? (Choose two.)
A. new Thread() {
public void start() { doStuff(); }};
B. new Thread() {
public void run() { doStuff(); }};
C. new Thread(new Runnable() {
public void run() { doStuff(); }
}).start();
D. new Thread() {
public void start() { doStuff(); }
}.run();
E. new Thread(new Runnable() {
public void run() { doStuff(); }
}).run();
F. new Thread() {
public void run() { doStuff(); }
}.start();
Answer: C,F

Oracle   1Z0-854   1Z0-854   1Z0-854   1Z0-854 examen

NO.27 DRAG DROP
Click the Task button.
Answer:

Les spécialistes d'expérience de Pass4Test ont fait une formation ciblée au test Oracle 1Z0-854. Cet outil de formation est convenable pour les candidats de test Oracle 1Z0-854. Pass4Test n'offre que les produits de qualité. Vous aurez une meilleure préparation à passer le test avec l'aide de Pass4Test.