public class StudentProgram {
    public static void main(String[] args) {
        // 实例化两个Student对象
        Student student1 = new Student("S001", "张三", 85.5);
        Student student2 = new Student("S002", "李四", 92.0);

        // 调用study方法
        student1.study();
        student2.study();
    }

}
    // 定义Student类
    class Student {
        // 属性
        private String studentId;  // 学号
        private String name;       // 姓名
        private double score;      // 成绩

        // 构造方法
        public Student(String studentId, String name, double score) {
            this.studentId = studentId;
            this.name = name;
            this.score = score;
        }

        // study()方法
        public void study() {
            System.out.println(name + " 正在学习Java编程...");
        }

        public void setStudentId(String studentId) {
            this.studentId = studentId;
        }
    }