Java 8 | BiFunction | BiPredicate | BiConsumer

  • The lambda expression assigned to an object of BiFunction type is used to define its apply() which eventually applies the given function on the arguments.
R apply(T t, U u);
  • The main advantage of using a BiFunction is that it allows us to use 2 input arguments while in function we can only have 1 input argument.
@FunctionalInterface
public interface BiFunction<T, U, R>
  • T — Type of the first argument to the function.
  • U — Type of the second argument to the function.
  • R — Type of the result of the function.
  • 10. lines, we defined BiFunction with concat method.
  • 12.lines, we used apply method and put values.
  • 18.lines, we call powToString method, the method expects 2 integer values and a biFunction and a Function.
  • The method takes values and does Math.pow and then convert the result to String.
  • BiConsumers are useful when it is not required to return any value as they are expected to operate via side-effects.
  • We use accept method of BiConsumer
void accept(T t, U u)
  • BiConsumers is that it allows us to use 2 input arguments while in function don’t return any value
@FunctionalInterface
public interface BiConsumer<T, U>
  • T — Type of the first argument to the function.
  • U — Type of the second argument to the function.
  • 10. lines, we defined BiConsumer with map
  • 15–18.lines we put some values in map while we called putMap method
  • BiPredicate is a functional interface, which accepts two arguments and returns a boolean for the test
boolean test(T t, U u);
  • T — Type of the first argument to the function.
  • U — Type of the second argument to the function.
@FunctionalInterface
public interface BiPredicate<T, U> {
  • 7.lines we defined BiPredicate,
  • we put 2 arguments while called filterBiPredicate method and we used test(T t, U u) method,

Thank you for your time :)

Github: Binary

References:
BiFunction
BiConsumer
BiPredicate

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Java Developer @XPoint-Tech

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Hasan Kadir Demircan

Hasan Kadir Demircan

Java Developer @XPoint-Tech

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