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Functional Interfaces
Last Updated: May 22, 2026
High Priority
11 min read
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The Definition: One Abstract Method
The @FunctionalInterface Annotation
What Doesn't Count Against the SAM Rule
Why Functional Interfaces Matter: The Lambda Bridg...
Pre-Java-8 Functional Interfaces
Defining Your Own Functional Interface
When Things Break: Misusing @FunctionalInterface...
Functional Interfaces and Method Resolution
Performance Notes
A Worked Example: A Pluggable Pricer
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