Oracle Java SE 11 Developer - 1z1-819 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

Given the Person class with age and name along with getter and setter methods, and this code fragment:

What will be the result?

A. Aman Peter Tom B. Tom Peter Aman C. Tom Aman Peter D. Aman Tom Peter

Discussion 0

Correct Answer: A Vote an answer

Question 2

Given:

Which code fragment on line 1 makes the m map contain the employee with the highest salary for each neighborhood?

A.

B.

C.

D.

Discussion 0

Correct Answer: D Vote an answer

Question 3

What is the result?

A. 35 B. 357 C. 2357 D. 235 E. An ArrayIndexOutOfBoundsException is thrown at runtime.

Discussion 0

Correct Answer: B Vote an answer

Question 4

Given:

You want to implement the java.io.Serializable interface to the MyPersistenceData class.
Which method should be overridden?

A. the readExternal and writeExternal method B. the writeExternal method C. the readExternal method D. nothing

Discussion 0

Correct Answer: A Vote an answer

Question 5

Given:

Which three actions implement Java SE security guidelines? (Choose three.)

A. Change line 7 to return names.clone();. B. Change line 2 to protected volatile String[] names;. C. Change line 3 to private Secret(String[] names) {. D. Change line 2 to private final String[] names;. E. Change the getNames() method name to get$Names(). F. Change line 4 to this.names = names.clone();. G. Change line 6 to public synchronized String[] getNames() {.

Discussion 0

Correct Answer: B,C,D Vote an answer

Question 6

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 NoSuchFileException. 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 FileaAlreadyExistsException.

Discussion 0

Correct Answer: A Vote an answer

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Question 7

Given:

What action ensures successful compilation?

A. Replace public Color(int c) with private Color(int c). B. Replace int c; with private int c;. C. Replace enum Color with public enum Color. D. Replace int c; with private final int c;. E. Replace enum Color implements Serializable with public enum Color.

Discussion 0

Correct Answer: A Vote an answer

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Question 8

Which two commands are used to identify class and module dependencies? (Choose two.)

A. jmod describe B. java --show-module-resolution C. java Hello.java D. jar --show-module-resolution E. jdeps --list-deps

Discussion 0

Correct Answer: B,E Vote an answer

Question 9

Given:

What is the result?

A. Dr. Null B. An exception is thrown at runtime. C. null D. Dr. Who

Discussion 0

Correct Answer: C Vote an answer

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Question 10

Which code fragment compiles?

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

Discussion 0

Correct Answer: D Vote an answer

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Question 11

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?