#40 Implementing a Functional Interface with Four Arguments

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JavaOOPPractice

Implement a functional interface that accepts four arguments and returns a result. Demonstrate its use by adding four integers.

@FunctionalInterface
public interface QuadFunction<A, B, C, D, R> {
    R apply(A arg1, B arg2, C arg3, D arg4);
}

public class Main {
    public static void main(String[] args) {
        ...
    }
}

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