[Jul 02, 2022] 1Z0-819 Dumps PDF and Test Engine Exam Questions - Exam4PDF [Q12-Q33]

[Jul 02, 2022] 1Z0-819 Dumps PDF and Test Engine Exam Questions - Exam4PDF

Verified 1Z0-819 exam dumps Q&As with Correct 215 Questions and Answers

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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

Handle text using String and StringBuilder classes
Use local variable type inference, including as lambda parameters
Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting

NEW QUESTION 12
Given:

What is the output?

A. null
B. A NullPointerException is thrown at run time.
C. Duke
D. A NoSuchElementException is thrown at run time.

Answer: C

Explanation:

NEW QUESTION 13
Given:

What is the result?

A. 0
B. 1
C. An exception is thrown at runtime.
D. 2

Answer: A

Explanation:

NEW QUESTION 14
Given:

Which two constructors will compile and set the class field strings? (Choose two.)

A. Option B
B. Option A
C. Option E
D. Option C
E. Option D

Answer: C,D

NEW QUESTION 15
Which statement about access modifiers is correct?

A. An abstract method can be declared with the private modifier.
B. An instance variable can be declared with the static modifier.
C. A local variable can be declared with the final modifier.
D. An inner class cannot be declared with the public modifier.
E. An interface can be declared with the protected modifier.

Answer: C

NEW QUESTION 16
Given:

Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)

A. public List<Integer> foo(Set<String> m) { ... }
B. public List<Object> foo(Set<CharSequence> m) { ... }
C. public ArrayList<Number> foo(Set<CharSequence> m) { ... }
D. public ArrayList<Integer> foo(Set<String> m) { ... }
E. public List<Integer> foo(TreeSet<String> m) { ... }
F. public List<Integer> foo(Set<CharSequence> m) { ... }

Answer: C,E

NEW QUESTION 17
Given:

Which is true?

A. The compilation fails due to an error in line 9.
B. The compilation fails due to an error in line 4.
C. The compilation fails due to an error in line 2.
D. The compilation fails due to an error in line 7.
E. The compilation fails due to an error in line 10.
F. The compilation fails due to an error in line 6.
G. The compilation succeeds.

Answer: F

NEW QUESTION 18
Which two statements are true about Java modules? (Choose two.)

A. Modular jars loaded from -classpath are automatic modules.
B. Modular jars loaded from --module-path are automatic modules.
C. Any named module can directly access all classes in an automatic module.
D. If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.
E. Classes found in -classpath are part of an unnamed module.

Answer: B,E

NEW QUESTION 19
Given this requirement:
Module vehicle depends on module part and makes its com.vehicle package available for all other modules.
Which module-info.java declaration meets the requirement?

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

Answer: B

NEW QUESTION 20
Given:

Which three are true? (Choose three.)

A. b1.foo(c) prints Bonjour le monde!
B. b1.foo(c) prints Ola Mundo!
C. f1.foo(c) prints Bonjour le monde!
D. f1.foo(c) prints Ola Mundo!
E. f2.foo(c) prints Hello world!
F. b1.foo(c) prints Hello world!
G. f1.foo(c) prints Hello world!
H. f2.foo(c) prints Ola Mundo!
I. f2.foo(c) prints Bonjour le monde!

Answer: B,G,I

NEW QUESTION 21
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

A. m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) - 1));
B. m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1);
C. m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1;
D. m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) - 1));

Answer: D

NEW QUESTION 22
And the code fragment:

Which situation will occur on code fragment execution?

A. Deadlock
B. Starvation
C. Race Condition
D. Livelock

Answer: B

NEW QUESTION 23
Given:

What is the result?

A. abdf
B. abd
C. adf
D. abcd
E. The compilation fails.

Answer: D

NEW QUESTION 24
Given:

What is the result?

A. 1.99,2.99,0
B. 1.99,2.99,0.0
C. 1.99,2.99
D. The compilation fails.

Answer: D

Explanation:

NEW QUESTION 25
Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

A. MyInterface2
B. MyInterface5
C. MyInterface4
D. MyInterface1
E. MyInterface3

Answer: A,B

NEW QUESTION 26
Your organization makes mlib.jar available to your cloud customers. While working on a code cleanup project for mlib.jar, you see this method by customers:

What security measures should be added to this method so that it meets the requirements for a customer accessible method?

A. Enclose the call to new Socket In an AccessController.doPrivileged block.
B. Make enableService private.
C.
D. Create a method that validates the hostName and portNumber parameters before opening the socket.

Answer: A

NEW QUESTION 27
Given:

You want to use the myResource class in a try-with-resources statement. Which change will accomplish this?

A. Implement AutoCloseable and override the close method.
B. Extend AutoCloseable and override the close method.
C. Extend AutoCloseable and override the autoClose method.
D. Implement AutoCloseable and override the autoClose method.

Answer: A

NEW QUESTION 28
Given:
String originalPath = "data\\projects\\a-project\\..\\..\\another-project"; Path path = Paths.get(originalPath); System.out.print(path.normalize()); What is the result?