一个实现计算器的Java源程序代码，代码简杰好用。-An implementation of the Java source code calculator, code simple kit easy to use.

这是一个简单的计算器的java程序，对初学者应该会有一些帮助-This is a simple calculator java program, there should be some help for beginners

java 计算器，实现了基本的简单计算器所有功能，包括加减乘除，MCM+MS，sin，cos，tan等-java calculator, basic and simple calculator all functions, including Math, MCM+MS, sin, cos, tan