Comparabe比较器排序

class Student implements Comparable { // 指定类型为Student private String name ; private int age ; private float score ; public Student(String name,int age,float score){ this.name = name ; this.age = age ; this.score = score ; } public String toString(){ return name + “\t\t” + this.age + “\t\t” + this.score ; } public int compareTo(Student stu){ // 覆写compareTo()方法，实现排序规则的应用 if(this.score>stu.score){ return -1 ; }else if(this.score<stu.score){ return 1 ; }else{ if(this.age>stu.age){ return 1 ; }else if(this.age<stu.age){ return -1 ; }else{ return 0 ; } } } }; public class ComparableDemo01{ public static void main(String args[]){ Student stu[] = {new Student(“张三”,20,90.0f), new Student(“李四”,22,90.0f),new Student(“王五”,20,99.0f), new Student(“赵六”,20,70.0f),new Student(“孙七”,22,100.0f)} ; java.util.Arrays.sort(stu) ; // 进行排序操作 for(int i=0;i<stu.length;i++){ // 循环输出数组中的内容 System.out.println(stu[i]) ; } } };