如何创建布尔函数来列出泛型集合中的对象？

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<Person> personList = new ArrayList<>();
        personList.add(new Person("Alice", 25));
        personList.add(new Person("Bob", 30));
        personList.add(new Person("Charlie", 35));

        List<Person> filteredList = filterPersons(personList);
        for (Person person : filteredList) {
            System.out.println(person.getName() + " - " + person.getAge());
        }
    }

    public static List<Person> filterPersons(List<Person> personList) {
        List<Person> filteredList = new ArrayList<>();
        for (Person person : personList) {
            if (person.getAge() >= 30) {
                filteredList.add(person);
            }
        }
        return filteredList;
    }
}

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;
    }
}