如何将一个类的对象分组为另一个类中的对象数组？

class Person {
    String name;
    int age;

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

class Group {
    String groupName;
    Person[] members;

    public Group(String groupName, Person[] members) {
        this.groupName = groupName;
        this.members = members;
    }
}

public class Main {
    public static void main(String[] args) {
        Person[] people = {
            new Person("Alice", 25),
            new Person("Bob", 30),
            new Person("Charlie", 25),
            new Person("David", 30)
        };

        Group[] groups = groupByAge(people);

        for (Group group : groups) {
            System.out.println("Group: " + group.groupName);
            for (Person person : group.members) {
                System.out.println("Name: " + person.name + ", Age: " + person.age);
            }
            System.out.println();
        }
    }

    public static Group[] groupByAge(Person[] people) {
        // 创建目标类对象数组
        Group[] groups = new Group[2];

        // 遍历源类对象
        for (Person person : people) {
            // 判断是否满足分组条件
            if (person.age == 25) {
                // 创建目标类对象
                Person[] members = {person};
                Group group = new Group("Group 25", members);

                // 将对象添加到目标类对象数组
                groups[0] = group;
            } else if (person.age == 30) {
                // 创建目标类对象
                Person[] members = {person};
                Group group = new Group("Group 30", members);

                // 将对象添加到目标类对象数组
                groups[1] = group;
            }
        }

        // 返回目标类对象数组
        return groups;
    }
}