public class main { public static void main(String[] args) { Scanner like = new Scanner(System.in); int score = like.nextInt(); String cj; if (score > 100) { System.out.println("你的成绩错误"); switch (score / 10) { case 10: case 9: System.out.println("你的成绩为优秀"); break; case 8: System.out.println("你的成绩为良好"); break; case 7: System.out.println("你的成绩为一般"); break; case 6: System.out.println("你的成绩为及格"); break; }else {System.out.println("你成绩为不合格");} } }}新手学java怎么解决啊，提示没有else