Java Streams:使用2个对象过滤

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args) {
        // 创建一个包含多个对象的列表
        List<Person> persons = new ArrayList<>();
        persons.add(new Person("Alice", 25));
        persons.add(new Person("Bob", 30));
        persons.add(new Person("Charlie", 35));
        persons.add(new Person("David", 40));

        // 使用两个对象过滤，筛选出年龄大于30的人
        List<Person> filteredPersons = persons.stream()
                .filter(person -> person.getAge() > 30)
                .collect(Collectors.toList());

        // 打印筛选结果
        for (Person person : filteredPersons) {
            System.out.println(person.getName() + " - " + person.getAge());
        }
    }
}

class Person {
    private String name;
    private int age;

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

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }
}