// functional/ClassFunctionals.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.util.*;
import java.util.function.*;

class AA {}
class BB {}
class CC {}

public class ClassFunctionals {
 static AA f1() { return new AA(); }
 static int f2(AA aa1, AA aa2) { return 1; }
 static void f3(AA aa) {}
 static void f4(AA aa, BB bb) {}
 static CC f5(AA aa) { return new CC(); }
 static CC f6(AA aa, BB bb) { return new CC(); }
 static boolean f7(AA aa) { return true; }
 static boolean f8(AA aa, BB bb) { return true; }
 static AA f9(AA aa) { return new AA(); }
 static AA f10(AA aa1, AA aa2) { return new AA(); }
 public static void main(String[] args) {
 Supplier<AA> s = ClassFunctionals::f1;
 s.get();
 Comparator<AA> c = ClassFunctionals::f2;
 c.compare(new AA(), new AA());
 Consumer<AA> cons = ClassFunctionals::f3;
 cons.accept(new AA());
 BiConsumer<AA,BB> bicons = ClassFunctionals::f4;
 bicons.accept(new AA(), new BB());
 Function<AA,CC> f = ClassFunctionals::f5;
 CC cc = f.apply(new AA());
 BiFunction<AA,BB,CC> bif = ClassFunctionals::f6;
 cc = bif.apply(new AA(), new BB());
 Predicate<AA> p = ClassFunctionals::f7;
 boolean result = p.test(new AA());
 BiPredicate<AA,BB> bip = ClassFunctionals::f8;
 result = bip.test(new AA(), new BB());
 UnaryOperator<AA> uo = ClassFunctionals::f9;
 AA aa = uo.apply(new AA());
 BinaryOperator<AA> bo = ClassFunctionals::f10;
 aa = bo.apply(new AA(), new AA());
 }
}