1Z1-819 VALID EXAM PREP & SAMPLE 1Z1-819 TEST ONLINE

1z1-819 Valid Exam Prep & Sample 1z1-819 Test Online

1z1-819 Valid Exam Prep & Sample 1z1-819 Test Online

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Tags: 1z1-819 Valid Exam Prep, Sample 1z1-819 Test Online, 1z1-819 Advanced Testing Engine, 1z1-819 Exam Details, Related 1z1-819 Exams

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The Oracle 1z1-819 exam consists of 80 multiple-choice questions that cover a range of topics related to Java SE 11, including data types, operators, control structures, classes and objects, inheritance, interfaces, and exceptions. 1z1-819 Exam also covers topics related to Java libraries, such as the Collections Framework and the Streams API. Candidates must demonstrate a thorough understanding of these topics in order to pass the exam.

Oracle Java SE 11 Developer Sample Questions (Q41-Q46):

NEW QUESTION # 41
Given:

You wants to make the reduction operation parallelized.
Which two modifications will accomplish this?

  • A. Replace line 1with int sum = number.stream. parallel ( ). Reduce (0, (n, m) -> n + m);
  • B. Replace line 1 with int sum = numbers. Parallel ( ). Stream ( ). Reduce (0, (n, m ) -> n + m);
  • C. Replace line 1with int sum = numbers. ParallelStream ( ). Reduce (0, (n, m ) -> n + m);
  • D. Replace line 1with int sum = number. Stream ( ) . flatMap (a -> a) .reduce (0, (n, m) -> n +m );
  • E. Replace line 1 with int sum = numbers. Stream (). Interate (0, a -> a+1. Reduce (0, (n m) -> n+m);

Answer: D,E


NEW QUESTION # 42
Given:

Which option should you choose to enable the code to print Something happened?

  • A. Add extends Exception on line 1.
    Add extends GeneralException on line 2.
  • B. Add extends SpecificException on line 1.
    Add extends GeneralException on line 2.
  • C. Add extends GeneralException on line 1.
    Add extends Exception on line 2.
  • D. Add extends Exception on line 1.
    Add extends Exception on line 2.

Answer: A

Explanation:


NEW QUESTION # 43
Given:

What is the result?

  • A. JoeMarry
  • B. Joenull
  • C. nullnull
  • D. nullMary

Answer: D

Explanation:


NEW QUESTION # 44
Given:

Which two changes need to be made to make this class compile? (Choose two.)

  • A. Change Line 1 to a class:public class API {
  • B. Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;
  • C. Change Line 1 to an abstract class:public abstract class API {
  • D. Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;
  • E. Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {

Answer: A,D


NEW QUESTION # 45
Given:

Which statement is true?

  • A. All classes from the package java.time. are loaded for the class Diary.
  • B. Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.
  • C. Tester must import java.time.LocalDate in order to compile.
  • D. Only LocalDate class from java.time package is loaded.

Answer: B


NEW QUESTION # 46
......

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