请问其中的“new”语法错误应该怎么改
import java.util.*;public class Grade{
public static void main(String[]args){
Scanner in= new Scanner(System.in);
System.out.println("Input score is: ");
int ch=in.nextInt();
char grade;
ch=ch/10;
switch(ch){
case 9:{grade='A';break;}
case 8:{grade='B';break;}
case 7:{grade='C';break;}
case 6:{grade='D';break;}
default:grade='F';
}
System.out.println("Grade= "+grade);
}
}
