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NEW QUESTION 77
Given:
It is required that if p instanceof Pair then p.isValid() returns true.
Which is the smallest set of visibility changes to insure this requirement is met?
- A. left and right must be private.
- B. left, right, setLeft, and setRight must be private.
- C. setLeft and setRight must be protected.
- D. isValid must be public.
Answer: A
NEW QUESTION 78
Which method throws an exception for not-a-number and infinite input values?
A)
B)
C)
D)
- A. Option B
- B. Option A
- C. Option C
- D. Option D
Answer: B
NEW QUESTION 79
Given:
What is the result?
- A. 0 4 9
- B. 0
- C. nothing
- D. 1
Answer: C
NEW QUESTION 80
Given:
What is the result?
- A. It throws a runtime exception.
- B. Value of Euler = "2.71828"
- C. Value of Euler = 2.71828
- D. The code does not compile.
Answer: D
NEW QUESTION 81
Given:
You want to examine the items list it contains an item for which the variable count is below zero.
Which code fragment at line 1 accomplish this?
- A. If (items.stream () .filter (i -> count < 0) . findFirst () ) {
- B. If (items.stream () .filter (i -> count < 0) . findAny () ) {
- C. If (items.stream () .allmatch (i -> count < 0) < 0) ) {
- D. If (items.stream () .anymatch (i -> count < 0) < 0) ) {
Answer: A
NEW QUESTION 82
Given:
What must be added in line 1 to compile this class?
- A. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
- B. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
- C. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
- D. catch(IOException e) { }
- E. catch(FileNotFoundException | IOException e) { }
Answer: D
NEW QUESTION 83
Given:
and
What is the result?
Joe
- A. null
null - B. null
- C. Mary
Joe - D. Marry
null
Answer: A
Explanation:
NEW QUESTION 84
Given:
Which is true?
- A. The code throws an exception at runtime.
- B. The code does not compile.
- C. The code compiles but does not print any result.
- D. The code prints 25.
Answer: B
NEW QUESTION 85
Given:
Which three are correct? (Choose three.)
- A. f2.foo(li) prints Bonjour le monde!
- B. b1.foo(li) prints Hola Mundo!
- C. f1.foo(li) prints Hello world!
- D. f2.foo(li) prints Hello world!
- E. f1.foo(li) prints Hola Mundo!
- F. b1.foo(li) prints Bonjour le monde!
- G. f2.foo(li) prints Hola Mundo!
- H. f1.foo(li) prints Bonjour le monde!
- I. b1.foo(li) prints Hello world!
Answer: B,H,I
NEW QUESTION 86
Given:
Which two lines inserted in line 1 will allow this code to compile? (Choose two.)
- A. void walk(){}
- B. abstract void walk();
- C. public abstract void walk();
- D. protected void walk(){}
- E. private void walk(){}
Answer: C,D
NEW QUESTION 87
Given:
Which two allow a.Main to allocate a new Person? (Choose two.)
- A. In Line 1, remove the access modifierPerson() {
- B. In Line 2, change the access modifier to protectedprotected class Main {
- C. In Line 1, change the access modifier to privateprivate Person() {
- D. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
- E. In Line 1, change the access modifier to publicpublic Person() {
Answer: D,E
NEW QUESTION 88
Given an application with a main module that has this module-info.java file:
Which two are true? (Choose two.)
- A. An implementation of country.countryDetails can be added to the main module.
- B. To run without an error, the application must have at least one module in the module path that provides an implementation of country.CountryDetails.
- C. A module providing an implementation of country.CountryDetails can be compiled and added without recompiling the main module.
- D. A module providing an implementation of country.CountryDetails must have a requires main; directive in its module-info.java file.
- E. To compile without an error, the application must have at least one module in the module source path that provides an implementation of country.CountryDetails.
Answer: D,E
Explanation:
Reference:
/java-9-error-not-in-a-module-on-the-module-source- path
NEW QUESTION 89
Given:
Which is true?
- A. The code throws an exception at runtime.
- B. The code does not compile.
- C. The code compiles but does not print any result.
- D. The code prints 25.
Answer: B
NEW QUESTION 90
Given:
Which two codes, independently, can be inserted in line to 1 compile?
- A. Abacus aba = (int e, int f) -> { return e * f; };
- B. Abacus aba = (int m, int n) -> { m * n };
- C. Abacus aba = (int i, j) -> ( return i * j; };
- D. Abacus aba = (a, b) -> a * b;
- E. Abacus aba = v, w -> x * y;
Answer: C,D
NEW QUESTION 91
Given:
and
Which four identifiers from the Fooand Barclasses are visible at line 1? (Choose four.)
- A. d
- B. c
- C. A
- D. h
- E. e
- F. B
- G. g
- H. j
- I. f
- J. i
Answer: B,C,F,G
NEW QUESTION 92
Given:
List<String> longlist = List.of("Hello","World","Beat");
List<String> shortlist = new ArrayList<>();
Which code fragment correctly forms a short list of words containing the letter "e"?
- A. Option B
- B. Option D
- C. Option A
- D. Option C
Answer: B
NEW QUESTION 93
Given:
and:
Which code, when inserted on line 10, prints the number of unique localities from the roster list?
- A. .map(Employee::getLocality)
.distinct()
.count(); - B. map(e -> e.getLocality())
.count(); - C. .filter(Employee::getLocality)
.distinct()
.count(); - D. .map(e -> e.getLocality())
.collect(Collectors.toSet())
.count();
Answer: C
NEW QUESTION 94
Your organization makes mlib.jar available to your cloud customers. While working on a new feature for mlib.jar, you see that the customer visible method public void enableService(String hostName, String portNumber) executes this code fragment
and you see this grant is in the security policy file:
What security vulnerability does this expose to your cloud customer's code?
- A. none because the customer code base must also be granted SocketPermission
- B. denial of service attack against any reachable machine
- C. SQL injection attack against the specified host and port
- D. XML injection attack against any mlib server
- E. privilege escalation attack against the OS running the customer code
Answer: C
NEW QUESTION 95
Given the code fragment:
What is the result?
- A. false false true
- B. false true false
- C. true false false
- D. false true true
Answer: B
Explanation:
NEW QUESTION 96
Given:
If file "App.config" is not found, what is the result?
- A. Exception in thread "main" java.lang.Error:Fatal Error: Configuration File, App.config, is missing.
- B. nothing
- C. Configuration is OK
- D. The compilation fails.
Answer: D
Explanation:
NEW QUESTION 97
Given:
What is the result?
- A. 6 13
- B. 0 5
- C. compilation error
- D. 5 12
Answer: C
Explanation:
NEW QUESTION 98
Given:
Which three are correct? (Choose three.)
- A. f2.foo(li) prints Bonjour le monde!
- B. b1.foo(li) prints Hola Mundo!
- C. f1.foo(li) prints Hello world!
- D. f2.foo(li) prints Hello world!
- E. f1.foo(li) prints Hola Mundo!
- F. b1.foo(li) prints Bonjour le monde!
- G. f2.foo(li) prints Hola Mundo!
- H. f1.foo(li) prints Bonjour le monde!
- I. b1.foo(li) prints Hello world!
Answer: B,H,I
NEW QUESTION 99
Given the code fragment:
What is the result?
- A. -1 : 2
- B. 2 : -1
- C. 3 : 0
- D. 2 : 3
Answer: B
NEW QUESTION 100
Given:
and
checkQuality(QUALITY.A);
and
Which code fragment can be inserted into the switch statement to print Best?
- A. A
- B. QUALITY.A.ValueOf()
- C. A.toString()
- D. QUALITY.A
Answer: A
NEW QUESTION 101
Given:
What is the result?
- A. 0
- B. 6104 3
- C. 10126 3
- D. 6910 3
Answer: B
Explanation:
NEW QUESTION 102
......
Who should take the Java SE 11 Developer Exam Number: 1Z0-819
This exam helps students to understand the basic relational database concepts. Moreover, it will teach the students about data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Moreover, with this project-based learning techniques, students will be able to create and work with projects to design, implement, and demonstrate a database solution for a business or organization.
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