如何使用compareTo()来比较两个对象？

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

    // 构造方法、getter和setter方法等省略

    @Override
    public int compareTo(Person person) {
        // 根据年龄进行比较
        return this.age - person.getAge();
    }
}

public class Main {
    public static void main(String[] args) {
        Person person1 = new Person("Alice", 25);
        Person person2 = new Person("Bob", 30);

        int result = person1.compareTo(person2);
        if (result < 0) {
            System.out.println("person1小于person2");
        } else if (result == 0) {
            System.out.println("person1等于person2");
        } else {
            System.out.println("person1大于person2");
        }
    }
}