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Core Java - Interview Questions and Answers for 'Functional interface' - 2 question(s) found - Order By Newest

Not frequently asked as it was introduced with Java 8.
 Q1. What is the @FunctionalInterface annotation ?Core Java
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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Related Questions

 How do you define a functional interface?


 Q2. How do you define a functional interface?Core Java
Ans. Create interface with the only one non-overriding abstract method and annotate it with @FunctionalInterface

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   Like         Discuss         Correct / Improve     functional interface  java 8     Asked in 1 Companies


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  What is the @FunctionalInterface annotation ?



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