import java.util.ArrayList;
import java.util.Collections;

public class StudentRanging {
    public static void main(String[] args) {
        ArrayList<Student> list = new ArrayList<Student>();
        Student a = new Student("胖胖", 30, 90.5);
        Student b = new Student("刘静", 25, 92.5);
        Student c = new Student("苏凯多多", 21, 80.5);
        Student f = new Student("阿成才", 24, 80.5);
        Student d = new Student("许三多", 28, 90.5);
        Student e = new Student("成才", 20, 90.5);

        list.add(a);
        list.add(b);
        list.add(c);
        list.add(d);
        list.add(e);
        list.add(f);
        Collections.sort(list);
        for (Student s : list) {
            System.out.println("info:" + s);
        }
    }

    public static class Student implements Comparable<Student> {
        String name;
        int age;
        double score;

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

        public String getName() {
            return name;
        }

        public int getAge() {
            return age;
        }

        public double getScore() {
            return score;
        }

        public void setName(String name) {
            this.name = name;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public void setScore(double score) {
            this.score = score;
        }

        @Override
        public String toString() {
            return name + " " + age + " " + score;
        }

        @Override
        public int compareTo(Student o) {
            int result = 0;

            return this.getName().compareTo(o.getName());
        }

    }

}