Oracle Java SE 11 Developer : 1Z0-819

Exam Code: 1Z0-819
Exam Name: Java SE 11 Developer
Updated: Oct 28, 2026 Q & A: 297 Questions and Answers

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About Oracle 1Z0-819 Exam

Life throws up enough obstacles without adding exam friction. The PracticeTorrent 1Z0-819 package removes three at once: 297 practice questions available the moment you pay, a year of free updates, and a Windows engine that simulates the real exam.

Oracle 1Z0-819 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Java SE 11 Developer
Exam Number:	1z0-819
Certificate Validity Period:	Lifetime (no expiration, but recertification recommended to stay current)
Real Exam Qty:	80
Passing Score:	68%
Exam Price:	$245 USD
Related Certifications:	Oracle Certified Professional: Java SE 11 Developer
Exam Format:	Multiple Choice, Multiple Select
Available Languages:	Portuguese, Chinese, English, Spanish, Japanese
Exam Duration:	90 minutes
Sample Questions:
Exam Way:	Pearson VUE testing centers (online proctored exam also available)
Pre Condition:	Oracle recommends but does not require candidates to first obtain the Oracle Certified Professional: Java SE 11 Programmer I (1Z0-815) certification. However, 1Z0-819 can be taken directly without 1Z0-815.
Official Syllabus URL:	https://education.oracle.com/java/java-se/product_oss_279

Oracle 1Z0-819 Exam Syllabus Topics:

Section	Weight	Objectives
Working with Streams and Lambda expressions	13%	- Use the Stream API to perform terminal operations - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Describe the Stream interface and pipeline - Use functional interfaces with lambda expressions - Filter a collection using lambda expressions - Use method references with streams
Controlling Program Flow	10%	- Use break and continue statements - Use switch statements - Use Java control statements - Use if and if/else statements - Use for, while, and do/while loops
Database Applications with JDBC	5%	- Use parameterized queries - Describe the advantages of using a connection pool - Execute queries and process results - Connect to a database using JDBC
Annotations	5%	- Apply standard annotations to classes and methods - Create custom annotations - Describe the purpose of annotations
Java Platform Module System	10%	- Explain the concept of module exports and requires - Deploy and execute modules - Explain the default modules and class path - Migrate applications to use modules - Declare module dependencies - Use jdeps to determine dependencies
Exception Handling and Localization	10%	- Describe the advantages of exception handling - Use assertions - Use standard exception classes - Create and throw custom exceptions - Create try-catch blocks and understand exception propagation - Use resource bundles and locale classes for internationalization
I/O (Fundamentals and NIO2)	7%	- Use Path interface to manipulate file paths - Use Stream API with files - Use NIO2 API to work with file systems and file attributes - Read and write console and file input/output using Java I/O system
Concurrency	10%	- Use synchronized blocks and the volatile keyword - Use ExecutorService to concurrently execute tasks - Identify potential threading problems - Create worker threads using Runnable and Thread objects - Use parallel streams to improve performance - Use java.util.concurrent atomic classes and ForkJoinPool
Working with Java OOP	15%	- Create inner classes and use them within other classes - Implement polymorphism - Implement inheritance - Implement encapsulation - Apply the static keyword to methods and fields - Use abstract classes and interfaces - Apply the final keyword to classes, methods, and fields
Secure Coding in Java SE Application	5%	- Prevent SQL injection and other attacks - Validate user input - Secure sensitive data - Prevent Denial of Service (DoS) attacks
Working with Arrays and Collections	8%	- Iterate through a collection - Use generic types and diamond operator - Sort elements in a collection - Filter a collection using lambda expressions - Search for elements in a collection - Create a list, set, map, or queue collection
Working with Java data types	12%	- Differentiate between object reference variables and primitive variables - Read or write to object fields - Call methods on objects - Manipulate data using the StringBuilder class and its methods - Declare and initialize variables - Create and manipulate strings - Explain an object's lifecycle (creation, dereferencing via garbage collection)

1Z0-819 Exam FAQ: Updates, Speed, Simulation

What exactly does the PracticeTorrent 1Z0-819 package include?

Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 297 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.

How many questions are on the 1Z0-819 exam, and how long is it?

The Oracle Java SE 11 Developer exam contains 80 to complete within 90 minutes. Timed simulation in the PracticeTorrent Desktop Test Engine teaches that rhythm before exam day does.

What domains does the 1Z0-819 exam consist of?

The official Oracle Java SE 11 Developer outline defines 12 domains. The leading three are Working with Streams and Lambda expressions (13%), Working with Arrays and Collections (8%), and Concurrency (10%). The full list is in the topics section above, and PracticeTorrent's 297 practice questions cover each one.

Do I need any prerequisites for the 1Z0-819 exam?

Oracle recommends but does not require candidates to first obtain the Oracle Certified Professional: Java SE 11 Programmer I (1Z0-815) certification. However, 1Z0-819 can be taken directly without 1Z0-815. Since requirements change over time, confirm the latest on the official Oracle exam page before scheduling.

What is the passing score for the 1Z0-819 exam, and what is the fee?

The Oracle Java SE 11 Developer exam requires 68% to pass, and registration costs $245 USD. A failed attempt means paying the same fee again — a readiness check with the PracticeTorrent engines before booking is the cheaper option.

Where do I begin with the 1Z0-819 exam?

The 1Z0-819 exam is a Oracle certification exam validating the Oracle Java SE 11 Developer syllabus shown above. It belongs to these credential paths: Oracle Certified Professional: Java SE 11 Developer. Candidates in 2026 start with PracticeTorrent's 297 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.

What training is recommended for the 1Z0-819 exam?

Oracle recommends these training resources for the Oracle Java SE 11 Developer exam:

Follow the training with steady self-testing — the 297 practice questions from PracticeTorrent help you apply theory and fill any gaps the training leaves.

How does the PracticeTorrent refund policy work for the 1Z0-819 exam?

PracticeTorrent issues a full refund if you take the Oracle Java SE 11 Developer exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.

How do I register for the 1Z0-819 exam?

Pearson VUE testing centers (online proctored exam also available) Register for the Oracle Java SE 11 Developer exam through these official channels:

After booking, PracticeTorrent delivers your practice questions within 1 minute — preparation starts the same day.

Oracle Java SE 11 Developer Sample Questions:

Question #1

Given:

Which statement is equivalent to line 1?

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

Reveal Solution Discussion 0

Correct Answer: A 🗳️

Explanation: Only visible for PracticeTorrent members. You can sign-up / login (it's free).

Question #2

Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

A. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
B. In Line 1, remove the access modifierPerson() {
C. In Line 2, change the access modifier to protectedprotected class Main {
D. In Line 1, change the access modifier to publicpublic Person() {
E. In Line 1, change the access modifier to privateprivate Person() {