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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: Apr. 04, 2025)
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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Nathan

23 hours ago
Just passed! There were several questions on Java Memory Model and garbage collection. Understand how JVM manages memory and different GC algorithms.
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Afton

14 days ago
New Java Developer certification! Thanks Pass4Success for the accurate practice materials.
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Wendell

17 days ago
The exam tests your knowledge of Java reflection API. Be comfortable with inspecting and modifying runtime behavior of applications.
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Roslyn

30 days ago
Pass4Success materials were spot on! The exam had intricate questions on generics. Practice using wildcards and understanding type erasure.
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Shawnee

1 months ago
Oracle exam success! Pass4Success helped me prepare efficiently in no time.
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Gianna

2 months ago
Passed the exam! Don't forget to study LocalDate, LocalTime, and DateTimeFormatter. The exam tests your ability to work with dates and times in Java.
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Rebbecca

2 months ago
Be prepared for questions on Java annotations. Understand how to create custom annotations and use built-in ones effectively.
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Reiko

2 months ago
Java SE 11 cert achieved! Pass4Success's questions were incredibly similar to the real thing.
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Aileen

3 months ago
Thanks to Pass4Success for the comprehensive materials. The exam had several questions on Java Collections. Know the differences between various collection types and their use cases.
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Catarina

3 months ago
Passing the Oracle Java SE 11 Developer exam was a milestone for me, and the Pass4Success practice questions were a big help. A question that I found challenging was about the differences between ArrayList and LinkedList in the context of Working with Arrays and Collections. I had to choose the most efficient data structure for a given scenario.
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Felicidad

3 months ago
Just aced the exam! Tricky questions on security features like digital signatures and encryption. Study the basics of Java security thoroughly.
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Irene

3 months ago
Passed my Oracle exam with flying colors! Pass4Success, you're a lifesaver!
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Wynell

4 months ago
The exam covers a lot on JDBC. Make sure you know how to work with different types of ResultSet and understand transaction management.
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Stephen

4 months 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

4 months 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

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

4 months 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

4 months 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

5 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.
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Fallon

5 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

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

5 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

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

6 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.
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Ressie

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

6 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

6 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.
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Dorothy

7 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.
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Mi

7 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

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

9 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.
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Aide

10 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!
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Donette

10 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

11 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 Apr. 04, 2025 (see below)

Question #1

Which describes an aspect of Java that contributes to high performance?

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Correct Answer: C

Question #2

Given these classes:

And this code fragment:

What is the result?

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Correct Answer: D

Question #3

Given:

What is the result?

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Correct Answer: C

Question #4

Given:

What is the result?

Reveal Solution Hide Solution
Correct Answer: C


Question #5

Given:

What is the result?

Reveal Solution Hide Solution
Correct Answer: B


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