用JAVA编写的简单的计算器，可以实现基本的加减乘除运算-With a simple calculator written in JAVA, can realize the basic addition and subtraction, multiplication and division

这是一款简单的java语言编写的计算器，对初入java的同学具有一定参考价值。-This is a simple calculator of Java language, students of entering the Java has certain reference value.