What is `ClassLoader` delegation model and what is the parent-first loading order?

Explanation

The `ClassLoader` delegation model follows the order of Bootstrap → Extension/Platform → Application, where each loader delegates to its parent first before loading itself. This ensures that classes are loaded in a hierarchical manner, allowing for dependencies to be resolved efficiently.

Key points

`ClassLoader` delegation model: Bootstrap → Extension/Platform → Application
Parent-first loading order: each loader delegates to its parent before loading itself
Ensures classes are loaded in a hierarchical manner for dependency resolution

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