有没有带佬能帮我改改 让他能运行 然后每句程序的注释写上

package student_management;

import java.util.Scanner;

import javax.sound.midi.Soundbank;

class student_M {
    String name; // 姓名
    int age; // 年龄
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    
}

class business_logic {
    student_M SM[] = new student_M[100];
    int n;
    Scanner sc = new Scanner(System.in);
    
    public void clear() {
        for(int i = 0; i < 100; i++) {
            SM[i] = new student_M();
        }
    }
    
    public void StudentInsert() {
        System.out.println("输入学生人数");
        n = sc.nextInt();
        SM[0].setName("勇敢牛牛");
        SM[0].setAge(15);
    }
    
    public void print() {
        System.out.println(SM[0].getName());
        System.out.println(SM[0].getAge());
    }
}



public class student {
    //static Scanner sc = new Scanner(System.in);
    public static void main(String[] args) {
        student_M sm = new student_M();
        business_logic B = new business_logic();
        B.StudentInsert();
        B.print();
    }
}

}

public void StudentInsert() {
    System.out.println("输入学生人数");
    n = sc.nextInt();
    SM[0] = new student_M();
    SM[0].setName("勇敢牛牛");
    SM[0].setAge(15);
}