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8.1 Designing Resilient Exception Hierarchies
Topic Summary
Learn when to use Checked vs Unchecked exceptions, exception chaining, and domain-specific error hierarchies.
What You Will Learn
• Distinguish between `Exception` (Checked) and `RuntimeException` (Unchecked).
• Preserve original causes using exception chaining: `new DomainException(msg, cause)`.
• Build structured domain exceptions with status codes.
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