ArrayList集合储存对象并排序（Java）

ArrayList集合储存对象并排序（Java）

存储一个学生类并输出(年龄相同时比较姓名)：

Student:

public class Student {

private int ege;
private String name;

public Student(int ege, String name) {
    this.ege = ege;
    this.name = name;
}

public int getEge() {
    return ege;
}

public void setEge(int ege) {
    this.ege = ege;
}

public String getName() {
    return name;
}

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

}

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StudentDemo:

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

public class StudentDemo {

public static void main(String[] args) {
    ArrayList<Student> arrayList = new ArrayList<>();
    Student a = new Student(11,"诸葛亮");
    Student b = new Student(12,"刘备");
    Student c = new Student(18,"孙权");
    Student d = new Student(13,"孙策");
    arrayList.add(a);

    arrayList.add(b);
    arrayList.add(c);
    arrayList.add(d);
    Collections.sort(arrayList, new Comparator<Student>() {
        @Override
        public int compare(Student o1, Student o2) {
            int num = o1.getEge() - o2.getEge();
            int num1=num==0?o1.getName().compareTo(o2.getName()):num;
            return num1;

        }
    });
    for (Student s:arrayList
         ) {
        System.out.println("年龄"+s.getEge()+" , "+"姓名"+s.getName());

    }

}

}