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Oracle 1Z0-819 Exam Questions

Exam Name: Java SE 11 Developer
Exam Code: 1Z0-819
Related Certification(s): Oracle Java Certification
Certification Provider: Oracle
Number of 1Z0-819 practice questions in our database: 296 (updated: Oct. 05, 2024)
Expected 1Z0-819 Exam Topics, as suggested by Oracle :
  • Topic 1: Define and use fields and methods, including instance, static and overloaded methods/ Working with Arrays and Collections
  • Topic 2: Create and use subclasses and superclasses, including abstract classes/ Use local variable type inference, including as lambda parameters
  • Topic 3: Understand variable scopes, apply encapsulation and make objects immutable/ Connect to and perform database SQL operations, process query results using JDBC API
  • Topic 4: Handle text using String and StringBuilder classes/ Utilize polymorphism and casting to call methods, differentiate object type versus reference type
  • Topic 5: Implement serialization and deserialization techniques on Java objects/ Declare and instantiate Java objects including nested class objects
  • Topic 6: Create and use interfaces, identify functional interfaces/ Initialize objects and their members using instance and static initialiser statements and constructors
  • Topic 7: Deploy and execute modular applications, including automatic modules/ Implement functional interfaces using lambda expressions
  • Topic 8: Develop code that mitigates security threats such as denial of service/ Use Java Streams to filter, transform and process data
  • Topic 9: Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting/ Sort collections and arrays using Comparator and Comparable interfaces
  • Topic 10: Secure resource access including filesystems, manage policies and execute privileged code/ Develop thread-safe code, using different locking mechanisms
Disscuss Oracle 1Z0-819 Topics, Questions or Ask Anything Related
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Ressie

8 days ago
Oracle certification in the bag! Pass4Success made prep so much easier and quicker.
upvoted 0 times
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Armanda

11 days ago
Thanks to Pass4Success for the great prep materials! The exam had tricky questions on Java modules. Study how to create and use modules thoroughly.
upvoted 0 times
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Lashaun

13 days ago
Passing the Oracle Java SE 11 Developer exam was a significant achievement for me, and the practice questions from Pass4Success played a crucial role. There was a tricky question on how to use the filter method in Streams and Lambda expressions. I wasn't entirely confident about the correct syntax, but I still managed to pass.
upvoted 0 times
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Dorothy

26 days ago
Just passed the Java SE 11 Developer exam! Watch out for questions on lambda expressions and functional interfaces. Make sure you understand how to use them effectively.
upvoted 0 times
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Mi

29 days ago
I recently passed the Oracle Java SE 11 Developer exam, and I must say that the Pass4Success practice questions were a great help. One of the questions I encountered was about the use of ResourceBundle in Localization. I was a bit unsure about how to properly load a resource bundle for a specific locale, but I managed to get through it.
upvoted 0 times
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Solange

1 months ago
Just passed the Java SE 11 Developer exam! Thanks Pass4Success for the spot-on practice questions.
upvoted 0 times
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Leota

3 months ago
My experience taking the Oracle Java SE 11 Developer exam was challenging but rewarding. Thanks to Pass4Success practice questions, I was able to confidently navigate through topics like defining and using fields and methods, creating subclasses and superclasses, and using local variable type inference. One question that I found tricky was about working with Arrays and Collections. I had to manipulate an array of objects and perform specific operations based on certain conditions.
upvoted 0 times
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Aide

4 months ago
Just passed the Java SE 11 Developer exam! Watch out for tricky lambda expression questions. Focus on understanding method references and functional interfaces. Big thanks to Pass4Success for their spot-on practice questions that helped me prepare quickly!
upvoted 0 times
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Donette

4 months ago
I recently passed the Oracle Java SE 11 Developer exam with the help of Pass4Success practice questions. The exam covered topics such as defining and using fields and methods, working with Arrays and Collections, creating and using subclasses and superclasses, and using local variable type inference. One question that stood out to me was related to overloaded methods. I had to determine the correct method to call based on the arguments passed.
upvoted 0 times
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Nan

5 months ago
Don't underestimate the importance of exception handling. The exam includes scenarios where you need to identify the correct try-with-resources syntax. Study AutoCloseable interface and suppressed exceptions. Pass4Success really helped me master these concepts quickly.
upvoted 0 times
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Free Oracle 1Z0-819 Exam Actual Questions

Note: Premium Questions for 1Z0-819 were last updated On Oct. 05, 2024 (see below)

Question #1

Given the code fragment:

Which two code fragments, independently, replace line 1 to implement the equivalent reduce operation?

A)

B)

C)

D)

E)

Reveal Solution Hide Solution
Correct Answer: A, C

Question #2

Given the directory structure:

What is the result?

A)

B)

C)

D)

Reveal Solution Hide Solution
Correct Answer: A

Question #3

Given:

Which make class thread safe?

Reveal Solution Hide Solution
Correct Answer: E

Question #4

Which two statements inserted independently on line 3 will make this code compile?

Reveal Solution Hide Solution
Correct Answer: A, C

Question #5

Given:

Which three are true?

Reveal Solution Hide Solution
Correct Answer: D, F, I

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