Intermediate module
Module 12: Generics and Type Safety
Parameterize types for reusable, type-safe APIs across collections and custom data structures.
Lessons
7
Short units, clear order.
Starts with
Why Generics?
Finish line
Mini-Project: Generic Data Structure
Lesson checklist
Module 12: Generics and Type Safety
0/7 complete0% complete
0112 minNext
Why Generics?
See how generics eliminate casts and runtime ClassCastException problems.
0216 minReady
Generic Classes & Interfaces
Define type parameters on classes to reuse logic for multiple data types.
0315 minReady
Generic Methods
Parameterize individual methods even inside non-generic classes.
0418 minReady
Bounded Type Parameters
Use upper and lower bounds to restrict acceptable types.
0516 minReady
Wildcards & Variance
Express flexible APIs with wildcard types.
0614 minReady
Type Erasure & Limitations
Understand how the JVM implements generics and why some operations are forbidden.
0730 minReady
Mini-Project: Generic Data Structure
Implement a generic cache or queue with bounded type parameters and Optional results.
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