程序编译的时候还好,一运行就报错:
int characterIndex = Integer.parseInt(message.substring(1,2));//报错语句
报错:
NumberFormatException:
For input string: "e" (in java.lang.NumberFormatException)
int characterIndex = Integer.parseInt(message.substring(1,2));//报错语句
报错:
NumberFormatException:
For input string: "e" (in java.lang.NumberFormatException)
看看你的数字在字符串的确切位置