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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: Dec. 14, 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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Stephen

2 days ago
I am happy to share that I passed the Oracle Java SE 11 Developer exam, with significant help from Pass4Success practice questions. One of the questions was about the Java Platform Module System, and I had to identify the correct way to declare a module and its dependencies.
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Roselle

5 days ago
Pass4Success really helped me prepare quickly. Be ready for questions on concurrent programming, especially the use of ExecutorService and Future.
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Princess

12 days ago
Certified Java Developer now! Pass4Success's materials were a time-saver for sure.
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Kimberely

18 days ago
Successfully passing the Oracle Java SE 11 Developer exam was a great feeling, and I owe it to the Pass4Success practice questions. There was a question about the different classes in the Java I/O API, specifically how to use BufferedReader to read text from a file. I wasn't entirely sure about the correct method to close the stream.
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Tayna

19 days ago
Passed the exam with flying colors! Pay attention to Java IO and NIO.2 questions. Understand the differences between various file operations.
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Leota

1 months ago
I passed the Oracle Java SE 11 Developer exam, and the Pass4Success practice questions were invaluable. One question that stumped me was related to implementing a Runnable interface for Concurrency. I had to figure out the correct way to start a thread using the Runnable implementation.
upvoted 0 times
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Fallon

1 months ago
Don't underestimate the importance of exception handling! The exam tests your ability to identify and correctly handle different types of exceptions.
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Eladia

1 months ago
Aced the Java SE 11 exam! Couldn't have done it without Pass4Success's relevant questions.
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King

2 months ago
The Oracle Java SE 11 Developer exam was tough, but I passed it with the help of Pass4Success practice questions. There was a question about the differences between primitive and reference data types in Java. I was a bit unsure about the behavior of autoboxing and unboxing in certain scenarios.
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Pansy

2 months ago
Surprised by the depth of stream API questions. Practice using complex stream operations and understand their performance implications.
upvoted 0 times
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Albina

2 months ago
I am thrilled to have passed the Oracle Java SE 11 Developer exam, thanks to the practice questions from Pass4Success. One challenging question involved understanding the principles of inheritance in the Java Object-Oriented Approach. I had to determine the output of a program with multiple levels of inheritance, which was quite confusing.
upvoted 0 times
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Ressie

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

3 months 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.
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Lashaun

3 months 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

3 months 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

3 months 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.
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Solange

3 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

5 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

6 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

6 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

8 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.
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Free Oracle 1Z0-819 Exam Actual Questions

Note: Premium Questions for 1Z0-819 were last updated On Dec. 14, 2024 (see below)

Question #1

Given:

What is the output?

A)

B)

C)

D)

Reveal Solution Hide Solution
Correct Answer: D

Question #2

Given the declaration:

In which two locations is it legal to apply the @Resource annotation?

Reveal Solution Hide Solution
Correct Answer: B, E

Question #3

Given the code fragment:

What is the result?

Reveal Solution Hide Solution
Correct Answer: B

Question #4

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 #5

Given the directory structure:

What is the result?

A)

B)

C)

D)

Reveal Solution Hide Solution
Correct Answer: A

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