java怎么计算一个String类型的数学表达式

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java怎么计算一个String类型的数学表达式

java怎样计算一个String类型的数学表达式？
java怎样计算一个String类型的数学表达式？比如(3+5)*20/5^8-90.

java J2EE 程序开发

13 years, 7 months ago

流浪的流浪狗

流浪的流浪狗 13 years, 7 months ago

print "计算器，输入q退出\n ";

answered 13 years, 7 months ago

万能的全控君

万能的全控君 answered 13 years, 7 months ago

answered 13 years, 7 months ago

yzblyp

yzblyp answered 13 years, 7 months ago

顶

answered 13 years, 7 months ago

浸浸梁浸浸

浸浸梁浸浸 answered 13 years, 7 months ago

学习

answered 13 years, 7 months ago

samshen

samshen answered 13 years, 7 months ago

正则表达式 split

answered 13 years, 7 months ago

神隐D赤月

神隐D赤月 answered 13 years, 7 months ago

可以使用编绎原理中的LR语法分析实现，也可以使用栈来实现也可以。

answered 13 years, 7 months ago

frankck

frankck answered 13 years, 7 months ago

answered 13 years, 7 months ago

淡定的酱油党

淡定的酱油党 answered 13 years, 7 months ago

具体大致有2种方法 4楼已经说了一种了还有我以前好象做过另一种是用的c++ 还利用词法分析原理对错误的表达式有提示
去看看就知道了

answered 13 years, 7 months ago

太太我喜欢你吖

太太我喜欢你吖 answered 13 years, 7 months ago

antlr

answered 13 years, 7 months ago

蒼月さかき

蒼月さかき answered 13 years, 7 months ago

拆开，写个函数，就是麻烦了点

answered 13 years, 7 months ago

本人是潜水员

本人是潜水员 answered 13 years, 7 months ago

java6继承rhino，转成javascript，直接eval也行，或者如上面所说的调用beanshell
、ruby之类的脚本来eval
=================================================
没学过。。。

answered 13 years, 7 months ago

是香菜不是香蕉

是香菜不是香蕉 answered 13 years, 7 months ago

想偷懒吗？组合成SQL 语句丢数据库执行下，Access也可以。
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学习

answered 13 years, 7 months ago

♂呵♂呵♂

♂呵♂呵♂ answered 13 years, 7 months ago

想偷懒吗？组合成SQL 语句丢数据库执行下，Access也可以。
==================================
正解方便实用我也是这么做的要不分解起来太麻烦

answered 13 years, 7 months ago

annie邓

annie邓 answered 13 years, 7 months ago