Module java.base
Package java.math
Provides classes for performing arbitraryprecision integer arithmetic (
BigInteger
) and arbitraryprecision decimal arithmetic (BigDecimal
). BigInteger
is analogous to the primitive integer types except that it provides arbitrary precision, hence operations on BigInteger
s do not overflow or lose precision. In addition to standard arithmetic operations, BigInteger
provides modular arithmetic, GCD calculation, primality testing, prime generation, bit manipulation, and a few other miscellaneous operations. BigDecimal
provides arbitraryprecision signed decimal numbers suitable for currency calculations and the like. BigDecimal
gives the user complete control over rounding behavior, allowing the user to choose from a comprehensive set of eight rounding modes.  Since:
 1.1

Class Summary Class Description BigDecimal Immutable, arbitraryprecision signed decimal numbers.BigInteger Immutable arbitraryprecision integers.MathContext Immutable objects which encapsulate the context settings which describe certain rules for numerical operators, such as those implemented by theBigDecimal
class. 
Enum Summary Enum Description RoundingMode Specifies a rounding behavior for numerical operations capable of discarding precision.