Java - 如何在加号上拆分字符串? [英] Java - How to split a string on plus signs?

问题描述

我试图在加号上拆分算术表达式(例如1+2+10+15").但是，我没有设法编写适当的正则表达式.我认为这会奏效:

I was trying to split an arithmetic expression (eg "1+2+10+15") on the plus signs. However, I didn't manage to write the appropriate regular expression. I thought this would work:

expression.split("\+");

但事实并非如此.您知道正确的解决方案吗?

but it doesn't. Do you know the correct solution?

推荐答案

确实如此.但是 split(...) 返回一个数组，它不会将您的 String 转换为 String[].试试这个:

It does. However split(...) returns an array, it does not "transform" your String into a String[]. Try this:

String expression = "1+2+10+1";
String[] tokens = expression.split("\+");

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