• Master handling primitives, wrapper classes, and type conversions in Java
• Evaluate and apply arithmetic and boolean expressions with precedence rules
• Effectively manipulate text using String, StringBuilder, and text blocks
• Work with Java Date-Time API to handle date, time, period, and timezone objects
• Create and manage control flow constructs like if/else, switch, and loops
• Implement advanced object-oriented concepts, including encapsulation and inheritance
• Create classes, records, and instantiate fields, methods, and constructors
• Apply polymorphism, method overriding, and the instanceof operator with pattern matching
• Work with Java interfaces, functional methods, and enums effectively
• Handle exceptions using try/catch/finally, try-with-resources, and multi-catch blocks
• Create and manipulate arrays and Java Collections like List, Set, Map, and Deque
• Process data using Streams and lambda expressions for filtering, transforming, and sorting
• Perform advanced operations on Streams like decomposition, reduction, and grouping
• Understand modular Java, compile code, and create modular/non-modular JARs
• Manage concurrent code execution with threads, ExecutorService, and parallel streams
• Develop thread-safe code with locking mechanisms and concurrent APIs
• Use Java I/O API for reading/writing files and serializing/deserializing objects
• Implement localization using resource bundles and locale-specific parsing/formatting
• Understand additional Java features, including annotations and the Java Logging API

What Is Oracle 1Z0-830 Certification?

The Oracle 1Z0-830 certification, also known as the Java SE 21 Developer Certification, is an advanced credential that validates your expertise in modern Java development. This certification is specifically designed for professionals who want to showcase their skills in Java SE 21 features, covering a wide range of programming concepts, from object-oriented principles to modular applications.

Benefits of Earning This Certification

• Career Growth: Elevate your profile with a globally recognized certification.

• Updated Knowledge: Stay ahead with expertise in Java SE 21, the latest long-term support version.

• Credibility: Demonstrates a deep understanding of core and advanced Java programming concepts.

• Real-World Applications: Gain skills that are highly relevant to modern enterprise applications.

How This Course Prepares You

This course is crafted to help you master every topic required for the Oracle 1Z0-830 certification. It includes lessons to build your understanding and quizzes to test your knowledge. By the end of the course, you’ll be well-prepared to tackle the certification exam with confidence.

Topics Covered in This Course

The Oracle 1Z0-830 certification requires proficiency across various domains of Java development.

Below is a breakdown of the topics:

1. Handling Date, Time, Text, Numeric, and Boolean Values

• Use primitives and wrapper classes, evaluate arithmetic and boolean expressions, and apply precedence rules, type conversions, and casting.

• Manipulate text using String, StringBuilder, and text blocks.

• Work with date, time, duration, period, and time-zone objects, including daylight saving time, using the Date-Time API.

2. Controlling Program Flow

• Create and manage control flow constructs such as if/else, switch statements and expressions, loops, and break/continue statements.

3. Using Object-Oriented Concepts in Java

• Declare and instantiate objects, including nested classes, and explain object lifecycles.

• Create classes, records, and define/instantiate instance and static fields, methods, constructors, and initializers.

• Implement method overloading, including var-arg methods.

• Understand variable scopes, apply encapsulation, and create immutable objects.

• Use local variable type inference.

• Implement inheritance, including abstract and sealed types, record classes, and overriding methods, including those of the Object class.

• Use polymorphism, casting, and the instanceof operator with pattern matching and switch constructs.

• Create and use interfaces with functional methods, and private, static, and default methods.

• Work with enums including fields, methods, and constructors.

4. Handling Exceptions

• Handle exceptions with try/catch/finally, try-with-resources, and multi-catch blocks.

• Create and use custom exceptions.

5. Working with Arrays and Collections

• Create and manipulate arrays, List, Set, Map, and Deque collections, including adding, removing, updating, retrieving, and sorting elements.

6. Working with Streams and Lambda Expressions

• Use Java Streams, including lambda expressions implementing functional interfaces, to filter, transform, process, and sort data.

• Perform decomposition, concatenation, reduction, grouping, and partitioning on sequential and parallel streams.

7. Packaging and Deploying Java Code

• Define and expose module content, including by reflection, and declare module dependencies.

• Compile Java code, create modular/non-modular JARs, runtime images, and implement migration to modules using unnamed/automatic modules.

8. Managing Concurrent Code Execution

• Create platform and virtual threads using Runnable and Callable objects.

• Manage thread lifecycles and use different ExecutorService implementations and concurrent APIs.

• Develop thread-safe code with locking mechanisms and process Java collections concurrently with parallel streams.

9. Using Java I/O API

• Read/write console and file data using I/O Streams.

• Serialize and deserialize Java objects.

• Work with Path objects and their properties using the java.nio.file API.

10. Implementing Localization

• Implement localization using locales and resource bundles.

• Parse and format messages, dates, times, and numbers, including currency and percentage values.

11. Additional Java Features

• Understand the basics of the Java Logging API.

• Use annotations like @Override, @FunctionalInterface, @Deprecated, @SuppressWarnings, and @SafeVarargs.

Comprehensive Scope of Certification

By completing this course, you will develop proficiency in:

1. Handling Date, Time, Text, Numeric, and Boolean Values

2. Controlling Program Flow

3. Object-Oriented Concepts in Java

4. Handling Exceptions

5. Arrays and Collections

6. Streams and Lambda Expressions

7. Packaging and Deploying Java Code

8. Managing Concurrent Code Execution

9. Java I/O API

10. Localization

11. Additional Java Features

This comprehensive preparation ensures you are fully equipped to pass the Oracle 1Z0-830 certification and advance your career in Java development. Let’s begin!

Who this course is for:

• Beginner Programmers: Those new to programming and looking to start with Java
• Intermediate Java Developers: Developers seeking to deepen their understanding of Java features and best practices
• Students Preparing for Oracle Certification: Individuals aiming to pass the Oracle 1Z0-830 certification exam
• Software Engineers: Professionals looking to enhance their Java skills for career growth
• Tech Enthusiasts: Anyone interested in learning Java for personal or professional projects
• College Students: Computer science or IT students wanting to strengthen their Java knowledge
• Backend Developers: Developers focused on server-side programming and Java-based applications