I am trying to make a calculator app in Android Studio and want to store the numerical value in a variable.
What is the longest data type in Java which can store the max amount of decimals and what is its limit?
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2You can use [`BigDecimal`](https://developer.android.com/reference/java/math/BigDecimal) – Federico klez Culloca Jun 15 '22 at 09:50
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check this https://stackoverflow.com/a/29622364/9110576 – Haseeb Hassan Asif Jun 15 '22 at 09:54
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do I just use BigDecimal the same way I would define a float variable? – Anonymous Jun 15 '22 at 09:56
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Not exactly. You can't use operators such as `+`, but instead call methods such as `add` (which return **new** `BigDecimal` instances, as instances are _immutable_; similar to `String`). – Slaw Jun 15 '22 at 20:16
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looks like you need Big classes, like BigInteger and BigDecimal. also inspect other useful for your case classes extending Number:
AtomicInteger, AtomicLong, BigDecimal, BigInteger, Byte, Double, DoubleAccumulator, DoubleAdder, Float, Half, Integer, Long, LongAccumulator, LongAdder, Rational, Short
question about max size of these "Bigs" is answered HERE
snachmsm
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