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 Not frequently asked as it was introduced with Java 8. | ||||
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| Ans. This is an informative annotation that specify that the interface is a functional interface. A Function Interface has only one abstract method and many default methods. Compiler generates an error if the interface specified with the annotation doesn't abide by the specifications for functional interface. | ||||
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 Discuss Correct / Improve  java java8 java 8 functional interface default methods | ||||
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 How do you define a functional interface? | ||||
