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说明： 改代码是用java编写的，功能为一个简单的计算器，可用于简单计算，清零。
(Change the code is written in java, function as a simple calculator can be used for simple calculations, clear.)
(Change the code is written in java, function as a simple calculator can be used for simple calculations, clear.)
文件列表：
计算器java.txt,5879,2009-11-15
