这是一个java写的计算器，除了加减乘除外还实现了许多的函数，比如sin,cos，求倒数，二十进制转换等，是我十多天的心血，程序非常长，也成功实现了设定的功能，有漂亮的用户界面，通过这个程序可以学到很多关于java GUI和计算器的知识-This is a java to write the calculator, in addition to addition and subtraction, but also to achieve a lot of functions, such as sin, cos, seeking the countdown, decimal conversion, etc., is my ten days of effort, the program is very long, Set the function, there is a beautiful user interface, through this program can learn a lot about java GUI and calculator knowledge