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Parse number with positive/negative prefix from string in java

Answer 1

+4 A:

Integer.parseInt(s.replace("+", ""));

In truth there are many gotchas using Integer to parse numbers like that, in that Integer has very specific bounds of size and format ("1,000,000.00") isn't parsing that way, but I'm taking your question as Integer.parseInt meets your needs just fine, you just have to deal with a + in your data.

Yishai 2010-01-18 22:46:25

java.text.NumberFormat is probably the parser to use, but still doesn't solve the issue with "+". String.replace(), as demonstrated, does.

Matthew Flynn 2010-01-18 23:34:42

Yes, indeed, I hoped there is some solution based on built-in parsers/formatters...

Gennady Shumakher 2010-01-19 05:24:00

@Gennady Shumakher, can you elaborate on the range of possibilities of what you need to parse?

Yishai 2010-01-19 14:14:44

@Yashai, I am OK with the solution, it's good enough for my use case. In generall, I just feel jdk could provide more elegant way to do that.

Gennady Shumakher 2010-01-19 16:13:38

@Gennady, NumberFormat, as Matthew said, is the way to go for serious number parsing. The DecimalFormat subclass is probably the class you want.

Yishai 2010-01-19 17:38:49

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Parse number with positive/negative prefix from string in java

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