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Valid Dumps 1Z0-819 Book, Reliable 1Z0-819 Guide Files

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Oracle 1z1-819 exam consists of 80 multiple-choice and multiple-select questions, which must be completed within 180 minutes. 1Z0-819 Exam is available in English and Japanese and can be taken either online or at a testing center.

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Oracle 1Z0-819 certification exam is designed for Java developers who want to validate their knowledge and skills in Java SE 11. Java SE 11 Developer certification exam is the replacement for the previous Java SE 11 Programmer II exam (1Z0-816) and covers a wide range of topics related to Java programming.

Oracle 1Z0-819 exam is a certification exam for Java SE 11 developers who want to demonstrate their proficiency in Java programming. 1Z0-819 Exam is designed to test an individual's knowledge and skills in various aspects of Java development, including syntax and language features, object-oriented programming, error handling, and more.

Oracle Java SE 11 Developer Sample Questions (Q20-Q25):

NEW QUESTION # 20
You replace the code on line 1 to use ParallelStream.

Which one is correct?

A. A NoSuchElementException is thrown at run time.
B. The code may produce a different result.
C. The code will produce the same result.
D. The compilation fails.

Answer: B

NEW QUESTION # 21
Which two describe reasons to modularize the JDK? (Choose two.)

A. improves application robustness
B. easier to understand the Java language
C. improves security and maintainability
D. easier to build a custom runtime linking application modules and JDK modules
E. easier to expose implementation details

Answer: A,C

NEW QUESTION # 22
Given:

What is the correct definition of the JsonField annotation that makes the Point class compile?
A)

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

Answer: B

NEW QUESTION # 23
Your organization makes mlib.jar available to your cloud customers. While working on a code cleanup project for mlib.jar, you see this method by customers:

What security measures should be added to this method so that it meets the requirements for a customer accessible method?

A. Enclose the call to new Socket In an AccessController.doPrivileged block.
B. Create a method that validates the hostName and portNumber parameters before opening the socket.
C.
D. Make enableService private.

Answer: A

NEW QUESTION # 24
Given:

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

A. Change line 1 to public class Student {.
B. Move the entire Student class declaration to a separate Java file, Student.java.
C. Change line 2 to public Student(String classname).
D. Change line 1 to static class Student {.
E. Change line 3 to Student student = new Student("Biology");.

Answer: C,E

Explanation:

NEW QUESTION # 25
......

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