定义一个类Caculate实现10以内的整数加减法的计算。自定义一个异常类NumberRangeException，当试图进行超范围运算时，产生相应的信息。编写应用程序进行测试-Define a class Caculate achieved within 10 integer addition and subtraction calculations. A custom exception class NumberRangeException, when the operation of range when attempting to produce the appropriate information. Write applications for testing