class Student{
    String studentId;
    String name;
    double score;

    //define a study approach
    void study() {
        System.out.println(studentId+" "+name+"正在学习,上一次的成绩是"+score);
    }
}



public class Main {
    public static void main (String[] args) {

        //setting up the first object
        Student s1=new Student();
        s1.studentId="001";
        s1.name="George";
        s1.score=90;

        //setting up the second object
        Student s2=new Student();
        s2.studentId="002";
        s2.name="Roya";
        s2.score=95;

        //using the approach study()
        s1.study();
        s2.study();
    }
}