BigInteger类nextProbablePrime()方法 (BigInteger Class nextProbablePrime() method)

• nextProbablePrime() method is available in java.math package.

  nextProbablePrime()方法在java.math包中可用。

• nextProbablePrime() method is used to get the next probable prime number that should be higher than this BigInteger and there is a limit of composite number that should not exceed 2 pow(-100).

  nextProbablePrime()方法用于获取下一个可能大于此BigInteger的下一个素数，并且合成数的限制不得超过2 pow(-100)。

• nextProbablePrime() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  nextProbablePrime()方法是一种非静态方法，仅可通过类对象访问，如果尝试使用类名访问该方法，则会收到错误消息。

• nextProbablePrime() method may throw an exception at the time of returning the next probable prime number.

  nextProbablePrime()方法在返回下一个可能的质数时可能会引发异常。

  ArithmeticException: This exception may throw when the value of this BigInteger is negative.

  ArithmeticException ：如果此BigInteger的值为负，则可能引发此异常。

Syntax:

句法：

    public BigInteger nextProbablePrime();

Parameter(s):

参数：

• None

  没有

Return value:

返回值：

The return type of this method is BigInteger, it returns BigInteger that holds the value larger than this BigInteger and it is probably prime.

此方法的返回类型为BigInteger ，它返回的BigInteger持有的值大于此BigInteger，并且它可能是素数。

Example:

例：

// Java program to demonstrate the example 
// of BigInteger nextProbablePrime() method of BigInteger
import java.math.*;
public class NextProbablePrimeOfBI {
public static void main(String args[]) {
// Initialize two variables str1 and str2
String str1 = "13";
String str2 = "6";
// Initialize two BigInteger objects  
BigInteger b_int1 = new BigInteger(str1);
BigInteger b_int2 = new BigInteger(str2);
// returns the next prime number
// of this BigInteger b_int1 so the value of
// this BigInteger is 13 then the next prime
// after 13 is 17
BigInteger next_prime = b_int1.nextProbablePrime();
System.out.println("b_int1: " + b_int1);
System.out.println("b_int1.nextProbablePrime(): " + next_prime);
System.out.println();
// returns the next prime number
// of this BigInteger b_int2 so the value of
// this BigInteger is 6 then the next prime
// after 6 is 7
next_prime = b_int2.nextProbablePrime();
System.out.println("b_int2: " + b_int2);
System.out.println("b_int2.nextProbablePrime(): " + next_prime);
}
}

Output

输出量

b_int1: 13
b_int1.nextProbablePrime(): 17b_int2: 6
b_int2.nextProbablePrime(): 7

翻译自: https://www.includehelp.com/java/biginteger-nextprobableprime-method-with-example.aspx