switch语句相关

Cannot switch on a value of type long. Only convertible int values, strings or enum variables are permitted

switch无法作用于long类型的值。 只允许可转换的int值，字符串或枚举变量

String i = "2";
switch (i){
   case "1":
       System.out.println(1);
   case "2":
       System.out.println(2);
}