类不能强制转换为java.lang.Comparable

public class Person implements Comparable<Person> {
    private String name;
    private int age;

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

    @Override
    public int compareTo(Person other) {
        return Integer.compare(this.age, other.age);
    }

    // Getters and setters...
}

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

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

        Collections.sort(people, new Comparator<Person>() {
            @Override
            public int compare(Person o1, Person o2) {
                return Integer.compare(o1.getAge(), o2.getAge());
            }
        });

        for (Person person : people) {
            System.out.println(person.getName() + ": " + person.getAge());
        }
    }
}