请大家看一下错误在哪里？
public class HelloWorld {
public static void main(String[] args) {
char today='日';
switch (today) {
case "一":
case "三":
case "五":
System.out.println("吃包子");
break;
case "二":
case "四":
case "六":
System.out.println("吃油条");
break;
default :
System.out.println("吃主席套餐");
}
}
}
