Week 2

Inheritance

Abstract Classes

Interfaces

Polymorphism

Error Handling in Java

Practice

Assignment

Back end Track

Under construction

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Implementation plan:

1. What are exceptions — disruptions in normal program flow
2. The exception hierarchy: Throwable → Exception → RuntimeException
3. Checked vs unchecked exceptions — when the compiler enforces handling
4. try-catch blocks
5. finally block — guaranteed execution
6. try-with-resources — automatic resource cleanup (intro, detailed in later weeks)
7. throw — explicitly throwing an exception
8. throws — declaring exceptions in method signatures
9. Creating custom exception classes
10. Best practices: don't catch Exception generically, meaningful messages
11. Exercise: add error handling to an existing codebase

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