Compable和Comparator自定义对象属性排序

package Comparable;


//Comparable自定义排序对象的属性
public class Student implements Comparable<Student> {

private String name;
private int age;
@Override
public int compareTo(Student o) {
return this.age==o.age?0:(this.age>o.age?1:-1);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}

}
public static void main(String[] args) {
// comparable
List<Student> list=new ArrayList<Student>();
for (int i = 0; i < 6; i++) {