package stream;

import lombok.Getter;

import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

public class StreamExample18 {
    public static void main(String[] args) {
        List<Person> people = Arrays.asList(
                new Person("Alice", 30),
                new Person("Bob", 25),
                new Person("Charlie", 35)
        );

        // 使用 Collectors.maxBy 找到年龄最大的人
        Optional<Person> oldest = people.stream()
                .collect(Collectors.maxBy(Comparator.comparingInt(Person::getAge)));

        oldest.ifPresent(person ->
                System.out.println("Oldest Person: " + person.getName() + ", Age: " + person.getAge()));
    }

    @Getter
    static class Person {
        private final String name;
        private final int age;

        public Person(String name, int age) {
            this.name = name;
            this.age = age;
        }
    }
}