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Pass 1z0-809 Exam with 195 Questions - Verified By TestSimulate
NEW QUESTION 82
Which class definition compiles?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: B
NEW QUESTION 83
Given the code fragment:
Which should be inserted into line n1 to print Average = 2.5?
- A. IntStream str = IntStream.of (1, 2, 3, 4);
- B. Stream str = Stream.of (1, 2, 3, 4);
- C. IntStream str = Stream.of (1, 2, 3, 4);
- D. DoubleStream str = Stream.of (1.0, 2.0, 3.0, 4.0);
Answer: D
NEW QUESTION 84
Given the content:
and the code fragment:
What is the result?
- A. A compilation error occurs.
- B. username = Entrez le nom d'utilisateur
password = Entrez le mot de passe - C. username = Enter User Name
password = Enter Password - D. The program prints nothing.
Answer: B
NEW QUESTION 85
Given:
From what threading problem does the program suffer?
- A. race condition
- B. deadlock
- C. starvation
- D. livelock
Answer: B
NEW QUESTION 86
Given:
What is the result?
- A. A NullPointerExceptionis thrown at run time.
- B. A compilation error occurs.
- C. IT:null
- D. IT:0.0
Answer: D
NEW QUESTION 87
Given the code fragment:
What is the result?
- A. An IndexOutOfBoundsException is thrown at runtime.
- B. (green, red, cyan, yellow)
- C. [green, red, yellow, cyan]
- D. [green, blue, yellow, cyan]
Answer: C
NEW QUESTION 88
Given:
What is the result?
- A. Hi Interface-1
- B. Hi Interface-2
- C. A compilation error occurs.
- D. Hi MyClass
Answer: D
NEW QUESTION 89
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. A SQLExceptionis thrown as runtime.
- B. A NullPointerExceptionis thrown as runtime.
- C. The program executes successfully and the STUDENT table is updated with one record.
- D. The program executes successfully and the STUDENT table is NOT updated with any record.
Answer: B
NEW QUESTION 90
Given the definition of the Emp class:
public class Emp
private String eName;
private Integer eAge;
Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
and code fragment:
List<Emp>li = Arrays.asList(new Emp("Sam", 20), New Emp("John", 60), New Emp ("Jim", 51)); Predicate<Emp> agVal = s -> s.getEAge() > 50; //line n1 li = li.stream().filter(agVal).collect(Collectors.toList()); Stream<String> names = li.stream()map.(Emp::getEName); //line n2 names.forEach(n -> System.out.print(n + " ")); What is the result?
- A. John Jim
- B. Sam John Jim
- C. A compilation error occurs at line n1.
- D. A compilation error occurs at line n2.
Answer: A
NEW QUESTION 91
Given:
and the code fragment:
Which two code fragments, when inserted at line n1independently, enable the code to print TruckCarBike?
- A. .sorted (Comparable.comparing (Vehicle: :getVName)).reversed ()
- B. .sorted((v1, v2) -> Integer.compare(v1.getVId(), v2.getVid()))
- C. .sorted(Comparator.comparing ((Vehicle v) -> v.getVId()))
- D. .map (v -> v.getVid())
.sorted () - E. .sorted ((v1, v2) -> v1.getVId() < v2.getVId())
Answer: B
NEW QUESTION 92
Given the code fragment:
Stream<List<String>> iStr= Stream.of ( Arrays.asList ("1", "John"),
Arrays.asList ("2", null)0;
Stream<<String> nInSt = iStr.flatMapToInt ((x) -> x.stream ());
nInSt.forEach (System.out :: print);
What is the result?
- A. A compilation error occurs.
- B. 1John2null
- C. A NullPointerException is thrown at run time.
- D. 0
Answer: C
NEW QUESTION 93
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. A compilation error occurs.
- B. The program prints 1 2 3.
- C. The program prints 1 1 1.
- D. The program prints 1 2 3 and the order is unpredictable.
Answer: B
NEW QUESTION 94
Given:
What is the result?
Bar Hello
- A.
- B. Baz Hello
Baz Hello - C. Foo Hello
Bar Hello - D. A compilation error occurs in the Dazeclass.
Answer: B
NEW QUESTION 95
Given the code fragment:
Assume that dbURL, userName, and passwordare valid.
Which code fragment can be inserted at line n1to enable the code to print Connection Established?
Properties prop = new Properties();
- A. con.setClientInfo (“user”, userName);
con.setClientInfo (“password”, password); - B. prop.put (“userid”, userName);
prop.put (“password”, password);
prop.put(“url”, dbURL);
con = DriverManager.getConnection (prop);
con = DriverManager.getConnection (dbURL); - C. Properties prop = new Properties();
- D. prop.put (“user”, userName);
prop.put (“password”, password);
con = DriverManager.getConnection (dbURL, prop);
con = DriverManager.getConnection (userName, password, dbURL);
Answer: D
NEW QUESTION 96
Given the content of /resourses/Message.properties:
welcome1="Good day!"
and given the code fragment:
Properties prop = new Properties ();
FileInputStream fis = new FileInputStream ("/resources/Message.properties"); prop.load(fis); System.out.println(prop.getProperty("welcome1")); System.out.println(prop.getProperty("welcome2", "Test"));//line n1 System.out.println(prop.getProperty("welcome3")); What is the result?
- A. Good day!
Test
null - B. Good day!
followed by an Exception stack trace - C. Good day!
Test
followed by an Exception stack trace - D. A compilation error occurs at line n1.
Answer: A
NEW QUESTION 97
Given:
and the code fragment:
What is the result?
- A. false
true - B. true
false - C. false
false - D. true
true
Answer: B
NEW QUESTION 98
Given the code fragments:
4 . void doStuff() throws ArithmeticException, NumberFormatException, Exception
{
5 . if (Math.random() >-1 throw new Exception ("Try again");
6 . }
and
2 4. try {
2 5. doStuff ( ):
2 6. } catch (ArithmeticException | NumberFormatException | Exception e) {
2 7. System.out.println (e.getMessage()); }
2 8. catch (Exception e) {
2 9. System.out.println (e.getMessage()); }
3 0. }
Which modification enables the code to print Try again?
- A. Replace line 26 with:
} catch (ArithmeticException | NumberFormatException e) { - B. Comment the lines 28, 29 and 30.
- C. Replace line 26 with:
} catch (Exception | ArithmeticException | NumberFormatException e) { - D. Replace line 27 with:
throw e;
Answer: A
NEW QUESTION 99
......
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