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); }
原文：http://www.cnblogs.com/lxcmyf/p/7425038.html