Java Warmup Course for AQA Team

Version 2.0.0 (Last Update 03.10.2024)

Level: Junior - Middle.

Welcome to the Java warmup course designed for the AQA team. This series of lessons aims to provide a comprehensive understanding of Java fundamentals and advanced topics. Each lesson comes with classwork, relevant articles, and homework assignments. Let's dive in!

Lesson 1

Code: Lesson 1 Code

Description:

In this lesson, we cover essential Java concepts such as classes, object-oriented programming (OOP), lambdas, streams, and the 'case' keyword. We'll also explore threads and touch upon the importance of the 'equals' method, along with hints for interviews.

Class Work:

Read the article

Topics:

1. Classes and OOP
2. Lambdas and Streams
3. Case keyword
4. Threads
5. Equals and interview hints

Homework:

1. Create your class and implement equals.
2. Run a thread as a lambda.

Lesson 2

Code: Lesson 2 Code

Description:

Building upon OOP concepts, this lesson delves into SOLID principles and compositions. We'll discuss how to structure classes effectively and create a sample class (e.g., Car) to demonstrate OOP and SOLID principles.

Class Work:

Read the article

Topics:

1. OOP
2. SOLID principles
3. Compositions

Homework:

Create your class and implement OOP and SOLID principles around it.

Lesson 3

Code: Lesson 3 Code

Description:

Generics are a powerful feature in Java, allowing you to write flexible and reusable code. In this lesson, we explore the fundamentals of generics and how to use them effectively.

Class Work:

Read the article

Topics:

1. Generics

Homework:

1. Create your generics class for a Numbers class.
2. Create your class for a Car class.

Lesson 4

Code: Lesson 4 Code

Description:

Understanding the Java Virtual Machine (JVM) and Garbage Collection (GC) is crucial for writing efficient Java applications. This lesson provides insights into these key components.

Class Work:

Read the article

Topics:

1. JVM
2. GC

Homework:

Read articles about JVM and GC:

• Virtual Machine Specification
• GC

Lesson 5

Code: Lesson 5 Code

Description:

Threads are fundamental to concurrent programming. This lesson covers threads vs. processes, running threads, features, Executors API, locks, and atomics.

Class Work:

Read the article

Topics:

1. Threads vs. Process
2. Run Thread
3. Feature
4. Executors API
5. Locks
6. Atomics

Homework:

1. Run 100,000 threads inside an executor, incrementing an atomic integer in each thread.
2. Save your class to thread local and share it.

Lesson 6

Code: Lesson 6 Code

Description:

Build tools are essential for project management. This lesson covers popular build tools such as Maven and Gradle.

Class Work:

Read the article

Topics:

1. Maven
2. Gradle

Homework:

Save your project as a JAR file.

Lesson 7

Code: Lesson 7 Code

Topics:

1. Unit tests
2. TestNG and Mockk

Homework:

Add tests for your Car class (or your own).

Lesson 8

Code: Lesson 8 Code

Description:

This extra lesson explores languages beyond Java that can be useful for a team. We touch upon Groovy (testing with Spock), Kotlin (using Mockk in a Kotlin environment), and Scala (Gatling load tests).

Class Work:

Read the article

Topics:

1. Groovy (tested with Spock)
2. Kotlin (using Mockk in Kotlin environment)
3. Scala (Gatling load tests)

Homework:

Read more about these languages.

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Conclusion:

Congratulations on completing the Java Warmup Course for AQA Team! We hope these lessons have provided a solid foundation and expanded your knowledge of Java and related tools. Keep coding and exploring new horizons in the vast world of programming!

Happy coding!