Java FAQ _09 Basic Class Library (003) _java.math Package What is the function

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1, Java.math package has what function

The Java.math package provides a mathematical class in Java. Includes basic floating-point libraries, complex operations, and arbitrary-precision data operations. Main classes such as:

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The classes in math are described below:

1. arbitrary length shaping
   BigInteger, the arbitrary length of the non-variable shaping. Because the base type has a limited length of shaping, Java provides arbitrary-length, arbitrarily-accurate shaping. Provides a method of operation. Inherit from number.
   Mutablebiginteger, variable BigInteger.
   Signedmutablebiginteger, signed variable BigInteger.

2. arbitrary precision Values
   BigDecimal, immutable, arbitrary-precision signed values. Consists of an integer non-scale value of arbitrary precision and a 32-bit integer scale (scales). Provides a method of operation. Inherit from number.

3. byte filtering
   Bitsieve, a simple filter for finding prime numbers.

4. Context
   Mathcontext, mathematical operations context, describes some rules for numeric operators.
   Roundingmode, the enumeration of rounding algorithms.

Java FAQ _09 Basic Class Library (003) _java.math Package What is the function