浅谈Java中几种常见的比较器的实现方法

import java.util.Arrays;

class BookCook implements Comparable<BookCook>{
	private String title;
	private double price;
	public BookCook(String title,double price){
		this.title = title;
		this.price = price;
	}
	@Override
	public String toString() {
		return "书名："+this.title+",价格："+this.price;
	}
	@Override
	public int compareTo(BookCook o) {
		if(this.price > o.price){
			return 1;
		}else if(this.price < o.price){
			return -1;
		}else{
			return 0;
		}
	}
}

class Student {
	private String name;
	private double score;
	public Student(String name,double score){
		this.name = name;
		this.score = score;
	}
	public double getScore(){
		return this.score;
	}
	@Override
	public String toString() {
		return "姓名:"+this.name+",分数:"+this.score;
	}
	
}
class StudentComparator implements Comparator<Student> {
	@Override
	public int compare(Student o1,Student o2) {
		if(o1.getScore() > o2.getScore()){
			return 1;
		}else if(o1.getScore() < o2.getScore()){
			return -1;
		}else{
			return 0;
		}
	}
}
public class TestComparator {

	public static void main(String[] args) {
		
		Student[] sts = new Student[]{
				new Student("小戴",60),
				new Student("小王",90),
				new Student("老王",80),
				new Student("小萱",95)
		};
		
		java.util.Arrays.sort(sts, new StudentComparator());
		System.out.println(java.util.Arrays.toString(sts));
	}
}