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This article will explain in detail how to use the BigInteger method in Java. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

BigInteger is not one of the basic data types, it is actually more like String, a class in Java, but its initialization method is not as convenient as String to directly assign values, but like other custom classes, call its constructor for initialization. In principle, there is no upper limit to the value range of this class, depending on your computer's memory, and its constructors are as follows:

BigInteger constructor

The best one to use here is BigInger (String val), which can directly change the decimal string format into a large integer, for example: BigInteger a=new BigInteger ("2222222222222222"); you can also specify the base: BigInteger v1 = new BigInteger ("a846146bbfc6d7bf", 16).

Since it is not a basic data type, the +, -, *, / operation symbols cannot be used in addition, subtraction, multiplication and division of large numbers, and Java does not redefine these operation symbols. Instead, they are replaced by some methods, such as add (), subtract (), mutiply () and divide (). Examples of their use are as follows:

Examples of BigInteger usage

So let's summarize the common methods that BigInteger provides us with:

BigInteger abs () returns the absolute value of a large integer BigInteger add (BigInteger val) returns the sum of two large integers BigInteger and (BigInteger val) returns the result of the bitwise sum of two large integers BigInteger andNot (BigInteger val) returns two large integers and non-results BigInteger divide (BigInteger val) returns two large integers quotient double doubleValue () returns the value of double type of large integer float floatValue () returns the value of type float of large integer BigInteger gcd (BigInteger val) returns the maximum common divisor of large integers int intValue () returns the integer value of large integers long longValue () returns the long value of large integers BigInteger max (BigInteger val) returns the maximum of two large integers BigInteger min (BigInteger val) returns the smallest of two large integers BigInteger mod (BigInteger val) uses the current large integer to val modulo BigInteger multiply (BigInteger val) returns the product of two large integers BigInteger negate () Returns the inverse of the current large integer BigInteger not () returns the current large integer non-BigInteger or (BigInteger val) returns the bitwise of two large integers or BigInteger pow (int exponent) returns the exponent power of the current large integer BigInteger remainder (BigInteger val) returns the current large integer divided by the remainder of val BigInteger leftShift (int n) moves the current large integer to the left n bits and returns BigInteger rightShift (int n) moves the current large integer n bits to the right Return BigInteger subtract (BigInteger val) returns the result of subtraction of two large integers byte [] toByteArray (BigInteger val) converts large integers to binary inverse codes saved in the byte array String toString () converts the current large integers to decimal string form BigInteger xor (BigInteger val) returns the XOR of two large integers about how to use the BigInteger method in Java and that's it. I hope the above content can be of some help to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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