CODEWITHSUNDEEP
javaandroidfloating-point
Abhishek
Abhishek

Reputation: 25

getFloat isn't there in java to get Float datatype

Didn't able to find getFloat method for float data type. Whereas it shows some default method like getString(), getInt(), getDouble(). But my issue is I want to get this into float.

I tried using getInt but it gives rounded number not floating point

trade.client_sgxbfmtm = String.valueOf(singleRow.getInt("client_sgxbfmtm"));

Upvotes: 0

Views: 349

Answers (1)

Sam Mason
Sam Mason

Reputation: 16184

Update: if this is financial information then you likely don't want to use IEE754 floating point values. These are binary formats, so can't represent values like 0.1 accurately. Given that you seem to be wanting to convert back to string, I'd assume that you might be able to do something like:

trade.client_sgxbfmtm = singleRow.getString("client_sgxbfmtm");

and so not introduce any inaccuracy by converting to an IEEE float and back again. This way your code doesn't know or care that the value contained in the string might be numeric. If you're actually doing something with the number, then the comments suggesting the use of BigDecimal might be better. But if you're just converting back to String then there's no point in going via anything.

A double follows the same standard as a float, just to a higher precision. Hence using getDouble and then casting to a float is likely what you want to be doing.

Moreover, most contemporary CPUs are able to work with (64bit) doubles at the same speed as (32bit) floats. The only practical difference comes when you're dealing with large, densely packed arrays of them (i.e. thousands or millions of items) where the space savings make sense, or you're using specialised maths libraries that make use of vectorised operations.

Upvotes: 2

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