[Oct-2021] Pass 1Z0-819 Exam in First Attempt Updated1Z0-819 Exams4Collection Exam Question
Oracle Java SE Dumps 1Z0-819 Exam for Full Questions - Exam Study Guide
NEW QUESTION 25
Given:
Which code, when inserted at one or more marked positions, would allow classes B and C to compile?
- A. public void z() { } // position 3
- B. implements A // position 1@Override // position 2
- C. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3
- D. @Override // position 2public void z() { } // position 3
Answer: D
NEW QUESTION 26
Given:
Which two statements are true if the method is added to Bar? (Choose two.)
- A. public <T> List<T> foo(Collection<T> arg) { ... } overrides Foo.foo.
- B. public <T> Collection<T> bar(Collection<T> arg) { ... } overloads Foo.foo.
- C. public <T> Collection<T> foo(Collection<T> arg) { ... } overloads Foo.foo.
- D. public <T> Iterable<T> foo(Collection<T> arg) { ... } overrides Foo.foo.
- E. public Collection<String> foo(Collection<String> arg) { ... } overrides Foo.foo.
- F. public <T> Collection<T> foo(Stream<T> arg) { ... } overloads Foo.foo.
Answer: A,D
NEW QUESTION 27
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, right, setLeft, and setRight must be private.
- B. setLeft and setRight must be protected.
- C. left and right must be private.
- D. isValid must be public.
Answer: C
NEW QUESTION 28
Given:
What must be added in line 1 to compile this class?
- A. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
- B. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
- C. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
- D. catch(FileNotFoundException | IOException e) { }
- E. catch(IOException e) { }
Answer: E
NEW QUESTION 29
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: D
Explanation:
NEW QUESTION 30
Given:
What is the result?
- A. An exception is thrown at runtime.
- B. 0
- C. 1
- D. 2
Answer: B
Explanation:
NEW QUESTION 31
Which code fragment compiles?
- A. Option A
- B. Option D
- C. Option B
- D. Option C
Answer: B
Explanation:
NEW QUESTION 32
Given the code fragment:
Which two code snippets inserted independently inside print method print Mondial: domainmodal?
- A. new Main (} .prefix + new Main().name
- B. Main.prefix + Main.getName()
- C. Main.prefix + Main.name
- D. prefix + getName
- E. prefix + Main, name
- F. prefix + name
Answer: A,E
NEW QUESTION 33
Given:
What is the result?
- A. null
- B. Dr. Who
- C. Dr. Null
- D. An exception is thrown at runtime.
Answer: A
Explanation:
NEW QUESTION 34
Given:
What is the result?
- A. SomeClass#methodA()AnotherClass#methodA()
- B. The compilation fails.
- C. SomeClass#methodA()SomeClass#methodA()
- D. AnotherClass#methodA()SomeClass#methodA()
- E. AnotherClass#methodA()AnotherClass#methodA()
- F. A ClassCastException is thrown at runtime.
Answer: B
Explanation:
NEW QUESTION 35
Given:
What is the result?
- A. An exception is thrown at runtime.
- B. 0
- C. 1
- D. 2
Answer: C
Explanation:
NEW QUESTION 36
Given:
Which two are correct? (Choose two.)
- A. The output will be exactly 2 1 3 4 5.
- B. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
- C. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
- D. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
- E. The program prints 1 4 2 3, but the order is unpredictable.
Answer: C,E
Explanation:
NEW QUESTION 37
Given:
Which line of code results in a compilation error?
- A. line n4
- B. line n1
- C. line n2
- D. line n3
Answer: A
Explanation:
NEW QUESTION 38
Given:
Which two interfaces can be used in lambda expressions? (Choose two.)
- A. MyInterface3
- B. MyInterface5
- C. MyInterface2
- D. MyInterface4
- E. MyInterface1
Answer: B,C
NEW QUESTION 39
Given the code fragment:
Which two statement inserted independently at line 1 enable this code to print PRRT?
- A. break a ;
- B. break b;
- C. continue a;
- D. continue b;
- E. i-;
- F. j--;
Answer: A
NEW QUESTION 40
Given:
What is the result?
- A. nothing
- B. java.lang.IllegalAccessException is thrown.
- C. Student
- D. null
- E. It fails to compile.
Answer: E
NEW QUESTION 41
Given:
Which two are correct? (Choose two.)
- A. Option C
- B. Option A
- C. Option D
- D. Option B
Answer: A,C
NEW QUESTION 42
Given:
What is the result?
- A. nothing
- B. appleapricotgrapelemonorangewatermelon
- C. appleorangegrapelemonapricotwatermelon
- D. watermelonorangelemongrapeapricotapple
Answer: D
Explanation:
NEW QUESTION 43
Examine these module declarations:
Which two statements are correct? (Choose two.)
- A. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
- B. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
- C. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.
- D. The Consumer module should require the ServiceProvider module.
- E. The ServiceProvider module should export the com.myimpl package.
Answer: B,D
NEW QUESTION 44
You are working on a functional bug in a tool used by your development organization. In your investigation, you find that the tool is executed with a security policy file containing this grant.
What action should you take?
- A. Nothing, because listing just the required permissions would be an ongoing maintenance challenge.
- B. File a security bug against the tool referencing the excessive permission granted.
- C. Nothing, because it is not related to the bug you are investigating.
- D. Remove the grant because it is excessive.
- E. Nothing, because it is an internal tool and not exposed to the public.
Answer: B
NEW QUESTION 45
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