Big value in Java

If the basic data types in Java cannot meet the requirements, you can use the biginteger and bigdecimal classes,

Biginteger commonly used functions include:

Biginteger add (biginteger value)

Biginteger multiply (biginteger value)

Biginteger divide (biginteger value)

Biginteger Mod (biginteger value)

Int compareto (biginteger value) // if the two big integers are the same, 0 is returned; otherwise, 1 is returned.

These two classes use the static valueof method to convert a common data type to a large value. However, this type cannot be operated using simple ++, but the member function must be used.

Two simple usage methods

  biginteger A  =  biginteger. valueof (  520  ) 
 biginteger C. a. add (B):  ///   C = A + B, A and B must both be big integers.  
 
 bigdecimal and biginteger have similar usage, can refer to javadoc learning 
 
 reference materials 
 
 http://download.oracle.com/javase/1.4.2/docs/api/java/math/BigDecimal.html 
 
 http://download.oracle.com/javase/1.4.2/docs/api/java/math/BigInteger.html