// functional/ClassFunctionals.java

// (c)2021 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.Comparator;

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());

}

}