207. Implementing a Consumer that takes five (or any other arbitrary number of) arguments

Before continuing with this problem, I strongly recommend that you read Problem 206.

Writing a custom Consumer that takes five arguments can be done as follows:

@FunctionalInterface
public interface FiveConsumer <T1, T2, T3, T4, T5> {
    
  void accept (T1 t1, T2 t2, T3 t3, T4 t4, T5 t5);
}

This is the five-arity specialization of the Java Consumer, just as the built-in BiConsumer is the two-arity specialization of the Java Consumer.

We can use FiveConsumer in conjunction with the PL4 formula, as follows (here, we compute y for x = 40.3):

FiveConsumer<Double, Double, Double, Double, Double> 
  pl4c = (a, b, c, d, x) -> Logistics.pl4(a, b, c, d, x);
        
pl4c.accept(4.19, -1.10, 12.65, 0.03, 40.3);  

The Logistics.pl4() is the method that contains the formula and displays the result:

public static void pl4(Double a, Double b, 
                ...