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NEW QUESTION 80
Given the code fragment:
What is the result?
- A. It prints 1 in the infinite loop.
- B. 0
- C. 01
- D. 1
- E. The program prints nothing.
Answer: E
NEW QUESTION 81
Given:
Which statement on line 1 enables this code fragment to compile?
- A. Function<String> function = m > m.toUpperCase();
- B. Function function = String::toUpperCase;
- C. UnaryOperator<String> function = String::toUpperCase;
- D. UnaryOperator function = s > s.toUpperCase();
Answer: C
Explanation:
NEW QUESTION 82
Given:
Examine these requirements:
* Eliminate code duplication.
* Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?
- A. Option D
- B. Option A
- C. Option C
- D. Option B
Answer: D
NEW QUESTION 83
Given:
Which two lines can replace line 1 so that the Y class compiles? (Choose two.)
- A. super.set(List<String> map)
- B. set(map)
- C. set(map.values());
- D. super.set(map.values());
- E. map.forEach((k, v) -> set(v)));
Answer: C,D
NEW QUESTION 84
Given:
executed with this command:
java Main one two three
What is the output of this class?
- A. nothing
- B. A java.lang.ArrayIndexOutOfBoundsException is thrown.
- C. 1) one2) two3) three
- D. The compilation fails.
- E. 1) one
Answer: C
NEW QUESTION 85
Given:
What is the output?
- A. A NoSuchElementException is thrown at run time.
- B. A NullPointerException is thrown at run time.
- C. null
- D. Duke
Answer: D
Explanation:
NEW QUESTION 86
Given:
and
What is the result?
Joe
- A. Marry
null - B. null
- C. Mary
Joe - D. null
null
Answer: D
Explanation:
NEW QUESTION 87
Given:
What must be added in line 1 to compile this class?
- A. catch(IOException e) { }
- B. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
- C. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
- D. catch(FileNotFoundException | IOException e) { }
- E. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
Answer: A
NEW QUESTION 88
Given:
What is the result?
- A. HH
- B. The compilation fails.
- C. Y@<< hashcode>>
- D. Null
Answer: C
NEW QUESTION 89
Given:
Which two are correct? (Choose two.)
- A. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
- B. The program prints 1 4 2 3, but the order is unpredictable.
- C. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
- D. The output will be exactly 2 1 3 4 5.
- E. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
Answer: B,E
Explanation:
NEW QUESTION 90
var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)
- A. double avg = numbers.stream().collect(Collectors.averagingDouble(n > n));
- B. double avg = numbers.parallelStream().mapToInt (m > m).average().getAsDouble ();
- C. double avg = numbers.stream().average().getAsDouble();
- D. double avg = numbers.stream().mapToInt (i > i).average().parallel();
- E. double avg = numbers.stream().parallel().averagingDouble(a > a);
Answer: B,C
Explanation:
NEW QUESTION 91
Given:
What is the type of the local variable x?
- A. String[ ]
- B. char
- C. Character
- D. String
Answer: D
NEW QUESTION 92
Given:
What is the result?
- A. abcd
- B. abdf
- C. adf
- D. The compilation fails.
- E. abd
Answer: A
NEW QUESTION 93
Given the code fragment:
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
NEW QUESTION 94
Given:
String originalPath = "data\\projects\\a-project\\..\\..\\another-project"; Path path = Paths.get(originalPath); System.out.print(path.normalize()); What is the result?
- A. data\projects\a-project\..\..\another-project
- B. data\projects\a-project\another-project
- C. data\another-project
- D. data\\projects\\a-project\\..\\..\\another-project
Answer: A
Explanation:
NEW QUESTION 95
Which code fragment compiles?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: A
Explanation:
NEW QUESTION 96
Given:
What is true?
- A. This should print the same result each time the program runs.
- B. A NoSuchElementExceptionis thrown at run time.
- C. The compilation fails.
- D. This may not print the same result each time the program runs.
Answer: D
Explanation:
NEW QUESTION 97
Given the code fragment:
Path currentFile = Paths.get("/scratch/exam/temp.txt");
Path outputFile = Paths get("/scratch/exam/new.txt");
Path directory = Paths.get("/scratch/");
Files.copy(currentFile, outputFile);
Files.copy(outputFile, directory);
Files.delete (outputFile);
The /scratch/exam/temp.txt file exists. The /scratch/exam/new.txt and /scratch/new.txt files do not exist.
What is the result?
- A. The program throws a FileaAlreadyExistsException.
- B. /scratch/exam/new.txt and /scratch/new.txt are deleted.
- C. A copy of /scratch/exam/new.txt exists in the /scratch directory and /scratch/exam/new.txt is deleted.
- D. The program throws a NoSuchFileException.
Answer: D
Explanation:
NEW QUESTION 98
Given:
Which three are true? (Choose three.)
- A. f2.foo(c) prints Ola Mundo!
- B. f2.foo(c) prints Hello world!
- C. f1.foo(c) prints Bonjour le monde!
- D. f1.foo(c) prints Hello world!
- E. f2.foo(c) prints Bonjour le monde!
- F. b1.foo(c) prints Ola Mundo!
- G. b1.foo(c) prints Hello world!
- H. b1.foo(c) prints Bonjour le monde!
- I. f1.foo(c) prints Ola Mundo!
Answer: D,E,F
NEW QUESTION 99
......
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