/**?* @author 墨風(fēng)?*/public class Student implements Comparable{ //名字 String name; //分?jǐn)?shù) int score; int age; public Student(String name,int score){ this.name = name; this.score = score; } public String toString(){ return name+"得了"+score+"分"; } public boolean equals(Object o){ if(this==o){ return true; } if(o instanceof Student){ Student stu = (Student) o; if(stu.name.equals(this.name)&&(stu.score==this.score)){ return true; } } return false; } public int hashCode(){ return score/10; }23行的this指的是