多重if语句

import java.util.*;public class Test1{  public static void main(String[]args){   Scanner in =new Scanner(System.in);   System.out.println("请输入你的成绩：");   int score =in.nextInt();   if(score>90){    System.out.println("优秀");   }else if(score>=80){    System.out.println("良好");   }else if(score>=60){    System.out.println("中等");   }else{    System.out.println("差");   }  }}