NEW QUESTION 1
Given the content of Operator.java, EngineOperator.java, and Engine.java files:

and the code fragment:

What is the result?

• A. The Engine.java file fails to compile.
• B. The EngineOperator.java file fails to compile.
• C. The Operator.java file fails to compile.
• D. ON OFF

Answer: A

NEW QUESTION 2
Given the definition of the Country class: public class country {
public enum Continent {ASIA, EUROPE} String name;
Continent region;
public Country (String na, Continent reg) { name = na, region = reg;
}
public String getName () {return name;} public Continent getRegion () {return region;}
}
and the code fragment:
List<Country> couList = Arrays.asList (
new Country (“Japan”, Country.Continent.ASIA), new Country (“Italy”, Country.Continent.EUROPE),
new Country (“Germany”, Country.Continent.EUROPE)); Map<Country.Continent, List<String>> regionNames = couList.stream ()
.c ollect(Collectors.groupingBy (Country ::getRegion, Collectors.mapping(Country::getName, Collectors.toList())))); System.out.println(regionNames);

• A. {EUROPE = [Italy, Germany], ASIA = [Japan]}
• B. {ASIA = [Japan], EUROPE = [Italy, Germany]}
• C. {EUROPE = [Germany, Italy], ASIA = [Japan]}
• D. {EUROPE = [Germany], EUROPE = [Italy], ASIA = [Japan]}

Answer: B

NEW QUESTION 3
Given the code fragments:
class MyThread implements Runnable {
private static AtomicInteger count = new AtomicInteger (0); public void run () {
int x = count.incrementAndGet(); System.out.print (x+” “);
}
}
and
Thread thread1 = new Thread(new MyThread()); Thread thread2 = new Thread(new MyThread()); Thread thread3 = new Thread(new MyThread()); Thread [] ta = {thread1, thread2, thread3};
for (int x= 0; x < 3; x++) { ta[x].start();
}
Which statement is true?

• A. The program prints 1 2 3 and the order is unpredictable.
• B. The program prints 1 2 3.
• C. The program prints 1 1 1.
• D. A compilation error occurs.

Answer: A

NEW QUESTION 4
Given the code fragment:

Which is the valid definition of the Course enum?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: A

NEW QUESTION 5
Given:
public class product { int id; int price;
public Product (int id, int price) { this.id = id;
this.price = price;
}
public String toString() { return id + “:” + price; }
}
and the code fragment:
List<Product> products = Arrays.asList(new Product(1, 10), new Product (2, 30),
new Product (2, 30));
Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> { p1.price+=p2.price;
return new Product (p1.id, p1.price);}); products.add(p); products.stream().parallel()
.reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)
.i fPresent(System.out: :println); What is the result?

• A. 2 : 30
• B. 4 : 0
• C. 4 : 60
• D. 4 : 602 : 303 : 201 : 10
• E. The program prints nothing.

Answer: C

NEW QUESTION 6
Given the code fragment:

You have been asked to define the ProductCode class. The definition of the ProductCode class must allow c1 instantiation to succeed and cause a compilation error on c2 instantiation.
Which definition of ProductCode meets the requirement?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: B

NEW QUESTION 7
Given the code fragment:
9. Connection conn = DriveManager.getConnection(dbURL, userName, passWord);
10. String query = “SELECT id FROM Employee”;
11. try (Statement stmt = conn.createStatement()) {
12. ResultSet rs = stmt.executeQuery(query);
13. stmt.executeQuery(“SELECT id FROM Customer”);
14. while (rs.next()) {
15. //process the results
16. System.out.println(“Employee ID: “+ rs.getInt(“id”));
17. }
18. } catch (Exception e) {
19. System.out.println (“Error”);
20. }
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists.
The Employee and Customer tables are available and each table has id column with a few records and the SQL queries are valid.
What is the result of compiling and executing this code fragment?

• A. The program prints employee IDs.
• B. The program prints customer IDs.
• C. The program prints Error.
• D. compilation fails on line 13.

Answer: C

NEW QUESTION 8
Given:
class Student {
String course, name, city;
public Student (String name, String course, String city) { this.course = course; this.name = name; this.city = city;
}
public String toString() {
return course + “:” + name + “:” + city;
}
and the code fragment: List<Student> stds = Arrays.asList(
new Student (“Jessy”, “Java ME”, “Chicago”), new Student (“Helen”, “Java EE”, “Houston”), new Student (“Mark”, “Java ME”, “Chicago”)); stds.stream()
.collect(Collectors.groupingBy(Student::getCourse))
.f orEach(src, res) -> System.out.println(scr)); What is the result?

• A. [Java EE: Helen:Houston][Java ME: Jessy:Chicago, Java ME: Mark:Chicago]
• B. Java EEJava ME
• C. [Java ME: Jessy:Chicago, Java ME: Mark:Chicago] [Java EE: Helen:Houston]
• D. A compilation error occurs.

Answer: B

NEW QUESTION 9
Given:

and this code fragment:

What is the result?

• A. Open-Close– Exception – 1 Open–Close–
• B. Open–Close–Open–Close–
• C. A compilation error occurs at line n1.
• D. Open–Close–Open–

Answer: C

NEW QUESTION 10
In 2015, daylight saving time in New York, USA, begins on March 8th at 2:00 AM. As a result, 2:00 AM becomes 3:00 AM.
Given the code fragment:

Which is the result?

• A. 3:00 – difference: 2
• B. 2:00 – difference: 1
• C. 4:00 – difference: 3
• D. 4:00 – difference: 2

Answer: B

NEW QUESTION 11
Given the structure of the STUDENT table: Student (id INTEGER, name VARCHAR) Given:
public class Test {
static Connection newConnection =null;
public static Connection get DBConnection () throws SQLException { try (Connection con = DriveManager.getConnection(URL, username, password)) {
newConnection = con;
}
return newConnection;
}
public static void main (String [] args) throws SQLException { get DBConnection ();
Statement st = newConnection.createStatement(); st.executeUpdate(“INSERT INTO student VALUES (102, ‘Kelvin’)”);
}
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the URL, userName, and passWord exists. The SQL query is valid.
What is the result?

• A. The program executes successfully and the STUDENT table is updated with one record.
• B. The program executes successfully and the STUDENT table is NOT updated with any record.
• C. A SQLException is thrown as runtime.
• D. A NullPointerException is thrown as runtime.

Answer: C

NEW QUESTION 12
Given:

and the code fragment:

What is the result?

• A. 0.0
• B. 1500.0
• C. A compilation error occur
• D. 2000.0

Answer: D

NEW QUESTION 13
Given the code fragment: UnaryOperator<Integer> uo1 = s -> s*2; line n1
List<Double> loanValues = Arrays.asList(1000.0, 2000.0); loanValues.stream()
.filter(lv -> lv >= 1500)
.map(lv -> uo1.apply(lv))
.forEach(s -> System.out.print(s + “ “)); What is the result?

• A. 4000.0
• B. 4000
• C. A compilation error occurs at line n1.
• D. A compilation error occurs at line n2.

Answer: D

NEW QUESTION 14
Given the code fragments:
4. void doStuff() throws ArithmeticException, NumberFormatException, Exception
{
5. if (Math.random() >-1 throw new Exception (“Try again”); 6. }
and
24. try {
25. doStuff ( ):
26. } catch (ArithmeticException | NumberFormatException | Exception e) {
27. System.out.println (e.getMessage()); }
28. catch (Exception e) {
29. System.out.println (e.getMessage()); }
30. }
Which modification enables the code to print Try again?

• A. Comment the lines 28, 29 and 30.
• B. Replace line 26 with:} catch (Exception | ArithmeticException | NumberFormatException e) {
• C. Replace line 26 with:} catch (ArithmeticException | NumberFormatException e) {
• D. Replace line 27 with: throw e;

Answer: C

NEW QUESTION 15
Given the code fragment:

Which statement can be inserted into line n1 to print 1,2; 1,10; 2,20;?

• A. BiConsumer<Integer,Integer> c = (i, j) -> {System.out.print (i + “,” + j+ “; “);};
• B. BiFunction<Integer, Integer, String> c = (i, j) –> {System.out.print (i + “,” + j+ “; “)};
• C. BiConsumer<Integer, Integer, String> c = (i, j) –> {System.out.print (i + “,” + j+ “; “)};
• D. BiConsumer<Integer, Integer, Integer> c = (i, j) –> {System.out.print (i + “,”+ j+ “; “);};

Answer: B

NEW QUESTION 16
Given the content:

and the code fragment:

What is the result?

• A. username = Entrez le nom d’utilisateur password = Entrez le mot de passe
• B. username = Enter User Name password = Enter Password
• C. A compilation error occurs.
• D. The program prints nothing.

Answer: A