public class Student {
    public int ID;
    public String name;
    public int age;
    public String major;
    public Student(int ID,String name,int age,String major){
        this.ID=ID;
        this.name=name;
        this.age=age;
        this.major=major;
    }
    public void info(){
        System.out.println("学生学号:"+ID);
        System.out.println("学生姓名:"+name);
        System.out.println("学生年龄:"+age);
        System.out.println("学生专业:"+major);
    }
    public static void main (String[] args){
        Student mary=new Student(20220933,"Mary_Jane",22,"computer_science");
        mary.info();
        Student John=new Student(20210288,"John Shark",23,"data science");
        John.info();
    }
}