对泛型对象数组列表进行排序

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

public class GenericObjectSorting {
    public static void main(String[] args) {
        // 创建泛型对象数组列表
        ArrayList<Person> personList = new ArrayList<>();
        personList.add(new Person("John", 25));
        personList.add(new Person("Alice", 30));
        personList.add(new Person("Bob", 20));

        // 定义比较器
        Comparator<Person> ageComparator = new Comparator<Person>() {
            @Override
            public int compare(Person p1, Person p2) {
                return p1.getAge() - p2.getAge(); // 按年龄升序排列
            }
        };

        // 对列表进行排序
        Collections.sort(personList, ageComparator);

        // 打印排序结果
        for (Person person : personList) {
            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;
    }
}