Java编写的简易图形计算器，能够进行简单的加减乘除计算-Java to prepare simple graphing calculator, to carry out simple addition and subtraction, multiplication and division calculation

是一个通过高级界面实现的简单加法计算的案例。是J2ME，适合初学者使用学习-Is a case of simple addition calculation achieved through advanced interface. Is J2ME, suitable for beginners to learn