EXAM 1Z1-819 DURATION | EXAM TOPICS 1Z1-819 PDF

Exam 1z1-819 Duration | Exam Topics 1z1-819 Pdf

Exam 1z1-819 Duration | Exam Topics 1z1-819 Pdf

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Oracle 1z1-819 exam is a certification exam for Java developers who want to demonstrate their proficiency in Java SE 11 development. 1z1-819 exam is designed to test the knowledge and skills of developers in various areas, including Java syntax and constructs, object-oriented programming, concurrency, I/O and NIO API, JDBC API, and more. Candidates who Pass 1z1-819 Exam will earn the Oracle Certified Professional: Java SE 11 Developer certification.

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Oracle Java SE 11 Developer Sample Questions (Q191-Q196):

NEW QUESTION # 191
Given the code fragment:

Which can replace line 2?

  • A. UnaryOperator u = (int i) -> i * 2;
  • B. UnaryOperator u = (var i) -> (i * 2);
  • C. UnaryOperator u = var i -> { return i * 2; };
  • D. UnaryOperator u = i -> { return i * 2);

Answer: B


NEW QUESTION # 192
Given:

Which statement is equivalent to line 1?

  • A. double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).reduce(starts, bo);
  • B. double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).sum;
  • C. double totalSalary = list.stream().map(e -> e.getSalary() * ratio).reduce (bo).ifPresent (p -> p.doubleValue());
  • D. double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);

Answer: D

Explanation:


NEW QUESTION # 193
Given:

What is the result?

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

Answer: B

Explanation:


NEW QUESTION # 194
Given these two classes:


And given this fragment:

Which describes the fragment?

  • A. The code does not compile.
  • B. It is subject to deadlock.
  • C. It is subject to livelock.
  • D. It throws IllegalMonitorStateException.

Answer: A


NEW QUESTION # 195
A company has an existing sales application using a Java 8 jar file containing packages:
com.company.customer;
com.company.customer.orders;
com.company.customer.info;
com.company.sales;
com.company.sales.leads;
com.company.sales.closed;
com.company.orders;
com.company.orders.pending;
com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)

B)

C)

D)

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

Answer: D


NEW QUESTION # 196
......

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