Arbitrary-Precision Math

The java.math package supports arbitrary-precision math. The package consists of two classes:

BigInteger numbers are immutable, arbitrary-precision integers. The BigInteger class provides analogs for all Java language primitive integer operators. The class also supports modular arithmetic, GCD calculation, prime number generation and testing, single-bit manipulation, and various other operations.
BigDecimal numbers are immutable, arbitrary-precision signed decimal numbers, suitable for monetary calculations. The BigInteger class provides operations for basic arithmetic, scale manipulation, comparison, format conversion, and hashing.

API Reference

java.math Package

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