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Tutorials under 'Flexible APIs'

Practical, example-driven posts focused on Java, Spring Boot, backend design, and performance.

Wildcards in Java Generics: Flexibility in Method Parameters

Learn how wildcards in Java Generics provide flexibility in method parameters. Covers ?, extends, super, PECS principle, API design patterns, and best practices

Flexible APIs Java Generics Tutorial PECS Principle Java Collections Best Practices Wildcards Type Erasure Generic Methods Generic Classes Bounded Types