Lambda: BiFunction takes two arguments and produces a result of a third type

BiFunction<T, U, R> generalizes Function to two input types, letting a single lambda combine two values of possibly different types into a result of a third type.

Code

BiFunction<String, Integer, String> repeat = (s, n) -> s.repeat(n);
System.out.println(repeat.apply("ab", 3));

Output

ababab