Oracle Oracle Certifications 1Z0-816 Questions & Answers

• Question 11:

  Given:

  

  What is the result?

  A. Orange Juice

  B. The compilation fails.

  C. Orange Juice Apple Pie Lemmon Ice Raspberry Tart

  D. The program prints nothing.

  Correct Answer: C

  

• Question 12:

  Which interface in the java.util.function package can return a primitive type?

  A. ToDoubleFunction

  B. Supplier

  C. BiFunction

  D. LongConsumer

  Correct Answer: A

  Reference: http://java.boot.by/ocpjp8-upgrade-guide/ch02s07.html

• Question 13:

  Given:

  

  and checkQuality(QUALITY.A); and

  

  Which code fragment can be inserted into the switch statement to print Best?

  A. QUALITY.A.ValueOf()

  B. A

  C. A.toString()

  D. QUALITY.A

  Correct Answer: B

• Question 14:

  Given:

  LocalDate d1 = LocalDate.of(1997,2,7); DateTimeFormatter dtf = DateTimeFormatter.ofPattern( /*insert code here*/ ); System.out.println(dtf.format (d1)); Which pattern formats the date as Friday 7th of February 1997?

  A. "eeee dd+"th of"+ MMM yyyy"

  B. "eeee dd'th of' MMM yyyy"

  C. "eeee d+"th of"+ MMMM yyyy"

  D. "eeee d'th of' MMMM yyyy"

  Correct Answer: B

  Reference: https://books.google.com.pk/books?id=PmiO65T9hF0Candpg=PA385andlpg=PA385anddq=java +pattern+formats+eeee+d%2Bth+of%2B+MMMM+yyyyandsource=blandots=IJN_-AnWQjandsig=ACfU3U2RJf7iuK3t_SKARwLSaak9xxV09Aandhl=enandsa=Xandved=2ahUKEwi4m6LL3vLoAhVgT RUIHURpC38Q6AEwDHoECBQQAQ#v=onepageandq=java%20pattern%20formats%20eeee%20d%2Bth% 20of%2B%20MMMM% 20yyyyandf=false

• Question 15:

  Given:

  

  Which is true about line 1?

  A. If the value is not present, a NoSuchElementException is thrown at run time.

  B. It always executes the System.out::print statement.

  C. If the value is not present, a NullPointerException is thrown at run time.

  D. If the value is not present, nothing is done.

  Correct Answer: D

  

• Question 16:

  Given:

  

  What is the result?

  A. 3 5 3 3

  B. 3 3 3 3

  C. 3 5 3 5

  D. 5 5 3 3

  Correct Answer: A

  

• Question 17:

  Given:

  

  Which two independent changes will make the Main class compile? (Choose two.)

  A. Move the entire Student class declaration to a separate Java file, Student.java.

  B. Change line 2 to public Student(String classname).

  C. Change line 1 to public class Student {.

  D. Change line 3 to Student student = new Student("Biology");.

  E. Change line 1 to static class Student {.

  Correct Answer: BD

  

• Question 18:

  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. .map(e -> e.getLocality())

  .collect(Collectors.toSet())

  .count();

  D. .filter(Employee::getLocality) .distinct() .count();

  Correct Answer: D

  Reference: https://developer.android.com/reference/android/location/Address

• Question 19:

  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 Tom Peter

  B. Tom Aman Peter

  C. Aman Peter Tom

  D. Tom Peter Aman

  Correct Answer: C

• Question 20:

  Which three guidelines are used to protect confidential information? (Choose three.)

  A. Limit access to objects holding confidential information.

  B. Clearly identify and label confidential information.

  C. Manage confidential and other information uniformly.

  D. Transparently handle information to improve diagnostics.

  E. Treat user input as normal information.

  F. Validate input before storing confidential information.

  G. Encapsulate confidential information.

  Correct Answer: ADF

  Reference: https://danielkvist.net/code/java-secure-coding-guidelines