Oracle 1Z0-819 : Java SE 11 Developer

  • Exam Code: 1Z0-819
  • Exam Name: Java SE 11 Developer
  • Updated: Aug 24, 2026
  • Q & A: 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:

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

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

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Exam Topic for Java SE 11 Developer Exam Number: 1Z0-819

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

  • Java Object-Oriented Approach
  • Java I/O API
  • Annotations
  • Database Applications with JDBC
  • Working with Java data types
  • Working with Arrays and Collections
  • Java Platform Module System

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Oracle 1Z0-819 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Working with Arrays and Collections8%- Search for elements in a collection
- Create a list, set, map, or queue collection
- Iterate through a collection
- Sort elements in a collection
- Use generic types and diamond operator
- Filter a collection using lambda expressions
Topic 2: Working with Java data types12%- Declare and initialize variables
- Explain an object's lifecycle (creation, dereferencing via garbage collection)
- Create and manipulate strings
- Read or write to object fields
- Call methods on objects
- Differentiate between object reference variables and primitive variables
- Manipulate data using the StringBuilder class and its methods
Topic 3: I/O (Fundamentals and NIO2)7%- 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
- Use Stream API with files
Topic 4: Java Platform Module System10%- Use jdeps to determine dependencies
- Explain the default modules and class path
- Migrate applications to use modules
- Deploy and execute modules
- Explain the concept of module exports and requires
- Declare module dependencies
Topic 5: Working with Java OOP15%- Apply the static keyword to methods and fields
- Create inner classes and use them within other classes
- Use abstract classes and interfaces
- Apply the final keyword to classes, methods, and fields
- Implement polymorphism
- Implement inheritance
- Implement encapsulation
Topic 6: Exception Handling and Localization10%- Describe the advantages of exception handling
- Use standard exception classes
- Create try-catch blocks and understand exception propagation
- Use assertions
- Use resource bundles and locale classes for internationalization
- Create and throw custom exceptions
Topic 7: Annotations5%- Describe the purpose of annotations
- Create custom annotations
- Apply standard annotations to classes and methods
Topic 8: Controlling Program Flow10%- Use Java control statements
- Use if and if/else statements
- Use for, while, and do/while loops
- Use break and continue statements
- Use switch statements
Topic 9: Database Applications with JDBC5%- Connect to a database using JDBC
- Use parameterized queries
- Execute queries and process results
- Describe the advantages of using a connection pool
Topic 10: Concurrency10%- Use synchronized blocks and the volatile keyword
- Use java.util.concurrent atomic classes and ForkJoinPool
- Create worker threads using Runnable and Thread objects
- Use parallel streams to improve performance
- Identify potential threading problems
- Use ExecutorService to concurrently execute tasks
Topic 11: Working with Streams and Lambda expressions13%- Use the Stream API to perform terminal operations
- Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods
- Use method references with streams
- Describe the Stream interface and pipeline
- Use functional interfaces with lambda expressions
- Filter a collection using lambda expressions
Topic 12: Secure Coding in Java SE Application5%- Prevent Denial of Service (DoS) attacks
- Secure sensitive data
- Validate user input
- Prevent SQL injection and other attacks

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