通过 LocalDate 字段进行比较的 compareTo 方法

我想实现 Comparable 接口，并使用它按 LocalDate 类型的字段比较（然后排序）数组元素。下面的代码给出错误 dateOfAdmission cannot be resolved or is not a field。我被建议阅读来自 oracle https://docs.oracle.com/javase/8/docs/api/java/time/chrono/ChronoLocalDate.html的帮助，但由于我的英语到目前为止包含麻烦和悲伤，我明白了一点。请向我解释错误是什么以及如何做，以便我可以通过 LocalDate 类型的字段比较对象。提前致谢。 ps：克隆未完成

package myDefault;
import java.time.*;
import java.util.*;


/*В данной программе ставлю целью повторить пройденный материал по сравнению и клонированию объектов*/

public class Student implements Comparable<LocalDate>, Cloneable
{
private String firstName;
private String lastName;
LocalDate dateOfAdmission;
int scholarship;

Student(String firstName, String lastName, int day, int month, int year, int scholarship)
{
    this.firstName = firstName;
    this.lastName = lastName;
    dateOfAdmission = LocalDate.of(day,month,year);
    this.scholarship = scholarship;
}

public int compareTo(LocalDate other)
{
    return Double.compare(dateOfAdmission, other.dateOfAdmission); 
}

public void fillArray()
{
    Student[] arrayOfStudents = new Student[3];
    Student petya = new Student("Petya","Popov",10,6,2017,1500);
    Student vasya = new Student("Vasya","Ovsyannikov",5,6,2017,1500);
    Student gena = new Student("Gena","Lolov",12,6,2017,1500);

    arrayOfStudents[0] = petya;
    arrayOfStudents[1] = vasya;
    arrayOfStudents[2] = gena;
}

public void createNewArray()
{
    Student[] newArray = new Student[3];
}

public void outputArray(Student[] arrayOfStudents)
{
    int counter;
    for(counter = 0; counter < 3; counter++)
    {
        System.out.println(arrayOfStudents[counter]);
    }
}

public Student clone() throws CloneNotSupportedException
{
    Student cloned = (Student) super.clone();
    return cloned;
}

}