10.编写一个控制台程序，重复输5个学生的信息（学生姓名，年龄，性别）,并把这5个学生对象加入到StringBuffer中buffer.append(student)，最后输出StringBuffer的内容，输出格式如下： 1.张三 22 男 2.李四 18 女 …… 注意每个学生的信息输出一行。

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        StringBuffer buffer = new StringBuffer();
        Scanner scanner = new Scanner(System.in);

        for (int i = 1; i <= 5; i++) {
            System.out.println("请输入第" + i + "个学生的姓名：");
            String name = scanner.next();

            System.out.println("请输入第" + i + "个学生的年龄：");
            int age = scanner.nextInt();

            System.out.println("请输入第" + i + "个学生的性别（男/女）：");
            String gender = scanner.next();

            Student student = new Student(name, age, gender);
            buffer.append(student.toString() + "\n");
        }

        System.out.println(buffer.toString());
    }
}

class Student {
    private String name;
    private int age;
    private String gender;

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

    public String toString() {
        return name + age + gender;
    }
}