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[UPDATED] Oracle 1z1-819 Certification Exam Questions [Q49-Q67]

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[UPDATED] Oracle 1z1-819 Certification Exam Questions

Quickly and Easily Pass Oracle Exam with 1z1-819 real Dumps

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 pdf:

  • Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
  • Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
  • Sort collections and arrays using Comparator and Comparable interfaces
  • Use Java Streams to filter, transform and process data
  • Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API

What is Java SE 11 Developer Exam Number: 1Z0-819 Certification Exam and Retake policy

Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.

To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.

 

Q49. Given:

Which two lines cause compilation errors? (Choose two.)

 
 
 
 
 

Q50. Given the code fragment:

What is the result?
A)

B)

C)

D)

 
 
 
 

Q51. 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?

 
 
 
 

Q52. 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?

 
 
 
 

Q53. Given:

and

What is the result?

 
 
 
 
 

Q54. Assume ds is a DataSource and the EMP table is defined appropriately.

What does executing this code fragment do?

 
 
 
 

Q55. Which method throws an exception for not-a-number and infinite input values?
A)

B)

C)

D)

 
 
 
 

Q56. Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

 
 
 
 

Q57. Given:

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

 
 
 
 
 
 

Q58. Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

 
 
 
 
 

Q59. Given:

What is the type of x?

 
 
 
 

Q60.

How many Thing objects are eligible for garbage collection in line 1?

 
 
 
 
 

Q61. Given:

What is the result?

 
 
 
 

Q62. Given:

When is the readObject method called?

 
 
 
 
 

Q63. Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

 
 
 
 
 

Q64. Given:

What is the result?

 
 
 
 
 

Q65. Given:

What is the type of the local variable x?

 
 
 
 

Q66. Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

 
 
 
 

Q67. Assume ds is a DataSource and the EMP table is defined appropriately.

What does executing this code fragment do?

 
 
 
 

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