What is the purpose of the BiPredicate<T, U> functional interface in Java?

BiPredicate<T, U> is a functional interface representing a predicate that takes two arguments of types T and U and returns a boolean value. It is used to test whether a pair of objects satisfies a certain condition.

Main methods:

• boolean test(T t, U u): Performs the test on the given arguments.
• default BiPredicate<T, U> and(BiPredicate<? super T, ? super U> other): Returns a composite predicate representing the logical AND of this predicate and another.
• default BiPredicate<T, U> or(BiPredicate<? super T, ? super U> other): Returns a composite predicate representing the logical OR of this predicate and another.
• default BiPredicate<T, U> negate(): Returns a predicate representing the logical negation of this predicate.

Example usage:

import java.util.function.BiPredicate;

public class BiPredicateExample {

    public static void main(String[] args) {

        BiPredicate<String, Integer> lengthCheck = (str, len) -> str.length() == len;

        System.out.println(lengthCheck.test("Hello", 5)); // true
        System.out.println(lengthCheck.test("World", 3)); // false

        BiPredicate<String, Integer> startsWithH = (str, len) -> str.startsWith("H");

        BiPredicate<String, Integer> combinedPredicate = lengthCheck.and(startsWithH);

        System.out.println(combinedPredicate.test("Hello", 5)); // true
        System.out.println(combinedPredicate.test("World", 5)); // false
    }
}