功能齐全的计算器可以实现加减乘除运算，在eclipse下开发的java应用程序。-Fully functional calculator arithmetic operations can be achieved, in eclipse java application development.

简单的计算器Java代码，实现了加减乘除等基本功能，简易计算器的图形界面-A simple calculator Java code that implements the basic functions such as addition and subtraction multiplication and division, simple graphical interface