L10: Companion Objects and Object Declarations

Lesson in Preparation (WIP)

This lesson is currently undergoing pedagogical drafting and development. It will soon be available with detailed visual diagrams, in-depth explanations, and its corresponding milestone in the AI Chat CLI incremental lab.

What will you learn in this lesson?

In this lesson we will explore:

• Deep Theory: object declarations (JVM-guaranteed thread-safe Singletons), companion object as the idiomatic replacement for static members, data object, and the Factory Pattern.
• Under the Hood: How the JVM implements the Singleton pattern via a static INSTANCE field and lazy, thread-safe class initialization.
• Incremental Lab (AI Chat CLI): Modeling chat connection events and global configuration state using Singletons and Companion Factories.

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