Extract Real Numbers from a string in Java

Question

I'd like to extract real numbers from a string in java. The string is circle(5.5) and I'd like to extract the 5.5. I think there is a way to do this with regex? but I'm not sure. Is there another way?

score 0 · Accepted Answer · edited May 23 '17 at 11:55

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check out the this thread and especially the last answer

edited May 23 '17 at 11:55

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answered Mar 09 '11 at 07:29

ayush

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that only handles integers. When i tried it it returned 5 5 is there a way to get it to return 5.5? – Daniel Mar 09 '11 at 07:31
did you use this regex `(([0-9]+.[0-9]*)|([0-9]*.[0-9]+)|([0-9]+))` – ayush Mar 09 '11 at 07:33
that printed (5 then .5 on the next line – Daniel Mar 09 '11 at 07:40

score 0 · Answer 2 · edited May 23 '17 at 12:04

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You need to make pattern for number then parse it in double or float gives what you want. see this link

edited May 23 '17 at 12:04

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answered Mar 09 '11 at 07:31

Ishu

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Extract Real Numbers from a string in Java

2 Answers2