Curry/uncurry in Java

Currying.java

import java.util.function.BiFunction;
import java.util.function.Function;

public class Currying {
  
  // Suppress default constructor for non-instantiability
  private Currying() {
      throw new AssertionError();
  }

  public static <T, U, R> Function<T, Function<U, R>> curry(
      BiFunction<? super T, ? super U, ? extends R> bf) {
    return t -> u -> bf.apply(t, u);
  }

  public static <T, U, R> BiFunction<T, U, R> uncurry(
      Function<? super T, ? extends Function<? super U, ? extends R>> f) {
    return (t, u) -> f.apply(t).apply(u);
  }

}