Oracle Java SE 11 Developer : 1z1-819 Exam Questions

Exam Code: 1z1-819
Exam Name: Java SE 11 Developer
Updated: Aug 14, 2026
Q&As: 297 Questions and Answers

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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

Define and use fields and methods, including instance, static and overloaded methods
Create and use enumerations
Initialize objects and their members using instance and static initialiser statements and constructors
Declare and instantiate Java objects including nested class objects, and explain objects' - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
Secure resource access including filesystems, manage policies and execute privileged code
Utilize polymorphism and casting to call methods, differentiate object type versus reference type
Understand variable scopes, apply encapsulation and make objects immutable
Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
Create and use subclasses and superclasses, including abstract classes

Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913

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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps:

Handle file system objects using java.nio.file API
Create, apply, and process annotations
Declare, use, and expose modules, including the use of services
Define and use fields and methods, including instance, static and overloaded methods
Create and use enumerations
Initialize objects and their members using instance and static initialiser statements and constructors
Read and write console and file data using I/O Streams
Utilize polymorphism and casting to call methods, differentiate object type versus reference type
Deploy and execute modular applications, including automatic modules
Understand variable scopes, apply encapsulation and make objects immutable
Connect to and perform database SQL operations, process query results using JDBC API Annotations
Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
Implement serialization and deserialization techniques on Java objects
Create and use subclasses and superclasses, including abstract classes

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Oracle 1z1-819 Exam Syllabus Topics:

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