Dernières Oracle 1Z0-804 examen pratique questions et réponses

Choisir le Pass4Test vous permet non seulement à réussir le test Oracle 1Z0-804, mais encore à enjouir le service en ligne 24h et la mise à jour gratuite pendant un an. Nous allons lancer au premier temps la Q&A Oracle 1Z0-804 plus nouvelle. Si vous ne passez pas le test, votre argent sera tout rendu.

Est-ce que vous vous souciez encore de réussir le test Oracle 1Z0-804? Est-ce que vous attendez plus le guide de formation plus nouveaux? Le guide de formation vient de lancer par Pass4Test peut vous donner la solution. Vous pouvez télécharger la partie de guide gratuite pour prendre un essai, et vous allez découvrir que le test n'est pas aussi dur que l'imaginer. Pass4Test vous permet à réussir 100% le test. Votre argent sera tout rendu si vous échouez le test.

Après une longue attente, les documentations de test Oracle 1Z0-804 qui combinent tous les efforts des experts de Pas4Test sont finalement sorties. Les documentations de Pass4Test sont bien répandues pendant les candidats. L'outil de formation est réputée par sa haute précision et grade couverture des questions, d'ailleurs, il est bien proche que test réel. Vous pouvez réussir le test Oracle 1Z0-804 à la première fois.

Pass4Test peut offrir nombreux de documentations aux candidats de test Oracle 1Z0-804, et aider les candidats à réussir le test. Les marétiaux visés au test Oracle 1Z0-804 sont tout recherchés par les experts avec leurs connaissances professionnelles et les expériences. Les charactéristiques se reflètent dans la bonne qualité de Q&A, la vitesse de la mise à jour. Le point plus important est que notre Q&A est laquelle le plus proche du test réel. Pass4Test peut vous permettre à réussir le test Oracle 1Z0-804 100%.

Quand vous hésitez même à choisir Pass4Test, le démo gratuit dans le site Pass4Test est disponible pour vous à essayer avant d'acheter. Nos démos vous feront confiant à choisir Pass4Test. Pass4Test est votre meilleur choix à passer l'examen de Certification Oracle 1Z0-804, et aussi une meilleure assurance du succès du test 1Z0-804. Vous choisissez Pass4Test, vous choisissez le succès.

Beaucoup de gens trouvent difficile à passer le test Oracle 1Z0-804, c'est juste parce que ils n'ont pas bien choisi une bonne Q&A. Vous penserez que le test Oracle 1Z0-804 n'est pas du tout autant dur que l'imaginer. Le produit de Pass4Test non seulement comprend les Q&As qui sont impressionnées par sa grande couverture des Questions, mais aussi le service en ligne et le service après vendre.

Code d'Examen: 1Z0-804
Nom d'Examen: Oracle (Java SE 7 Programmer II Exam)
Questions et réponses: 150 Q&As

Peut-être vous voyez les guides d'études similaires pour le test Oracle 1Z0-804, mais nous avons la confiance que vous allez nous choisir finalement grâce à notre gravité d'état dans cette industrie et notre profession. Pass4Test se contribue à amérioler votre carrière. Vous saurez que vous êtes bien préparé à passer le test Oracle 1Z0-804 lorsque vous choisissez la Q&A de Pass4Test. De plus, un an de service gratuit en ligne après vendre est aussi disponible pour vous.

1Z0-804 Démo gratuit à télécharger: http://www.pass4test.fr/1Z0-804.html

NO.1 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

Oracle   1Z0-804   1Z0-804   1Z0-804   1Z0-804

NO.2 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

certification Oracle   1Z0-804 examen   1Z0-804

NO.3 Given:
class Deeper {
public Number getDepth() {
return 10;
}
}
Which two classes correctly override the getDepth method?
A. public class deep extends Deeper {
protected integer getDepth(){
return 5;
}
}
B. public class deep extends Deeper {
public double getDepth() {
return"5";
}
}
C. public class deep extends Deeper {
public String getDepth () {
}
}
D. public class deep extends Deeper {
public Long getDepth (int d) {
return 5L;
}
}
E. public class deep extends Deeper {
public short getDepth () {
return 5;
}
}
Answer: A,E

Oracle examen   1Z0-804 examen   certification 1Z0-804   1Z0-804 examen

NO.4 Given:
import java.io.IOException;
import java.io.file.Path;
import java.io.file.Paths;
public class Path12 {
public static void main(String s[]) throws IOException {
Path path = Paths.get("\\sales\\quarter\\..\\qtrlreport.txt");
path.relativize(Paths.get("\\sales\\annualreport.txt"));
if(path.endsWith("annualreport.txt")) {
System.out.println(true);
} else {
System.out.println(false);
}
System.out.println(path);
}
}
What is the result?
A. false
\sales\quarter\ . . \qtrlreport.txt
B. false
\quarter\ . . \qtrlreport.txt
C. true
. . \ . . \ . . \ annualreport.txt
D. true
\ . . \ . . \annualreport.txt
Answer: A

Oracle   1Z0-804   certification 1Z0-804   1Z0-804   1Z0-804

NO.5 Given the code fragment:
public class App {
public static void main (String [] args){
Path path = Paths.get("C:\\education\\institute\\student\\report.txt");
System.out.println("get.Name(0): %s", path.getName(0));
System.out.println ("subpath(0, 2): %s", path.subpath (0, 2));}
}
What is the result?
A. getName (0): C:\
subpath (0, 2): C:\education\report.txt
B. getName(0): C:\
subpth(0, 2): C:\education
C. getName(0): education
subpath (0, 2): education\institute
D. getName(0): education
subpath(0, 2): education\institute\student
E. getName(0): report.txt
subpath(0, 2): insritute\student
Answer: C

certification Oracle   1Z0-804 examen   certification 1Z0-804   certification 1Z0-804
Explanation: Example:
Path path = Paths.get("C:\\home\\joe\\foo");
getName(0)
-> home
subpath(0,2)
Reference: The Java Tutorial, Path Operations

NO.6 Given the code fragment:
public class DisplaValues {
public void printNums (int [] nums){
for (int number: nums) {
System.err.println(number);
}
}
}
Assume the method printNums is passed a valid array containing data. Why is this method not
producing output on the console?
A. There is a compilation error.
B. There is a runtime exception.
C. The variable number is not initialized.
D. Standard error is mapped to another destination.
Answer: D

certification Oracle   1Z0-804 examen   certification 1Z0-804

NO.7 Which code fragment demonstrates the proper way to handle JDBC resources?
A. Try {
ResultSet rs = stmt.executableQuery (query);
statement stmt = con.createStatement();
while (rs.next()) (/* . . . */)
} catch (SQLException e) {}
B. Try {statement stmt = con.createStatement();
ResultSet rs = stmt.executableQuery (query);
while (rs.next()) (/* . . . */)
} catch (SQLException e) {}
C. Try {
statement stmt = con.createStatement();
ResultSet rs = stmt.executableQuery (query);
while (rs.next()) (/* . . . */)
} finally {
rs.close();
stmt.close();
}
D. Try {ResultSet rs = stmt.executableQuery (query);
statement stmt = con.createStatement();
while (rs.next()) (/* . . . */)
} finally {
rs.close();
stmt.close();
}
Answer: C

Oracle examen   1Z0-804   1Z0-804   certification 1Z0-804

NO.8 Given a language code of fr and a country code of FR, which file name represents a resource
bundle file name that is not the default?
A. MessageBundle_fr_FR.properties
B. MessageBundle_fr_FR.profile
C. MessageBundle_fr_FR.xinl
D. MessageBundle__fr__FR.Java
E. MessageBundle__fr__FR.Locale
Answer: A

Oracle   certification 1Z0-804   certification 1Z0-804

NO.9 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

Oracle   1Z0-804   1Z0-804 examen   certification 1Z0-804

NO.10 Given the incomplete pseudo-code for a fork/join framework application:
submit(Data) {
if(Data.size < SMALL_ENOUGH) {
_________________(Data); // line x
}
else {
List<Data> x = _________________(Data); // line Y
for(Data d: x
______________(d); // line z
}
}
And given the missing methods:
process, submit, and splitInHalf
Which three insertions properly complete the pseudo-code?
A. Insert submit at line X.
B. Insert splitInHalf at line X.
C. Insert process at line X.
D. Insert process at line Y.
E. Insert splitInHalf at line Y.
F. Insert process at line Z.
G. Insert submit at line Z.
Answer: C,E,G

Oracle   1Z0-804 examen   1Z0-804   1Z0-804 examen

NO.11 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

certification Oracle   1Z0-804   1Z0-804 examen   1Z0-804 examen

NO.12 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

Oracle   certification 1Z0-804   1Z0-804   1Z0-804 examen

NO.13 ITEM Table
* ID, INTEGER: PK
* DESCRIP, VARCHAR(100)
* PRICE, REAL
* QUALITY, INTEGER
And given the code fragment (assuming that the SQL query is valid):
try {
String query = "SELECT * FROM Item WHERE ID=110";
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(query);
while (rs.next ()) {
System.out.println("ID: " + rs.getInt("Id"));
System.out.println("Description: " + rs.getString("Descrip"));
System.out.println("Price: " + rs.getDouble("Price"));
System.out.println("Quantity: " + rs.getInt("Quantity"));
}
} catch (SQLException se) {
System.out.println("Error");
}
What is the result of compiling and executing this code?
A. An exception is thrown at runtime
B. Compile fails
C. The code prints Error
D. The code prints information about Item 110
Answer: A

Oracle examen   certification 1Z0-804   1Z0-804   1Z0-804

NO.14 To provide meaningful output for:
System.out.print( new Item ()):
A method with which signature should be added to the Item class?
A. public String asString()
B. public Object asString()
C. public Item asString()
D. public String toString()
E. public object toString()
F. public Item toString()
Answer: D

Oracle   certification 1Z0-804   1Z0-804

NO.15 Give:
Class Employee {
public int checkEmail() {/* . . . */}
public void sendEmail (String email) {/* . . . */}
public Boolean validDateEmail(){/* . . . */}
public void printLetter (String letter) {/* . . . */}
}
Which is correct?
A. Employee takes advantage of composition.
B. Employee "has-an" Email.
C. Employee "is-a" LetterPrinter.
D. Employee has low cohesion.
Answer: D

Oracle examen   certification 1Z0-804   1Z0-804 examen   1Z0-804

NO.16 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

Oracle   1Z0-804 examen   1Z0-804 examen   1Z0-804 examen   1Z0-804 examen

NO.17 Which two codes correctly represent a standard language locale code?
A. ES
B. FR
C. U8
D. Es
E. fr
F. u8
Answer: A,D

Oracle   certification 1Z0-804   1Z0-804 examen   1Z0-804 examen

NO.18 Which method would you supply to a class implementing the Callable interface?
A. callable ()
B. executable ()
C. call ()
D. run ()
E. start ()
Answer: C

certification Oracle   1Z0-804   1Z0-804   1Z0-804

NO.19 Given the existing destination file, a source file only 1000 bytes long, and the code fragment:
public void process (String source, String destination) {
try (InputStream fis = new FileInputStream(source);
OutputStream fos = new FileOutputStream(destination)
) {
byte [] buff = new byte[2014];
int i;
while ((i = fis.read(buff)) != -1) {
fos.write(buff,0,i); // line ***
}
} catch (IOException e) {
System.out.println(e.getClass());
}
}
What is the result?
A. Overrides the content of the destination file with the source file content
B. Appends the content of the source file to the destination file after a new line
C. Appends the content of the source file to the destination file without a break in the flow
D. Throws a runtime exception at line***
Answer: A

Oracle   1Z0-804   1Z0-804   1Z0-804 examen   1Z0-804

NO.20 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

Oracle   certification 1Z0-804   1Z0-804 examen

Vous pouvez télécharger tout d'abord une partie de Q&A Certification Oracle 1Z0-804 pour tester si Pass4Test est vraiment professionnel. Nous pouvons vous aider à réussir 100% le test Oracle 1Z0-804. Si malheureusement, vous ratez le test, votre argent sera 100% rendu.