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How to Check Whether a Number is Prime

Submitted by: M S Sridhar(sridhar.ms@gmail.com)

Tuesday Apr 17th 2018 by M S Sridhar

Language: Java, Level: Intermediate: - Learn how to check if a number is prime using the isProbablePrime method in Java.

Java has an API called BigInteger and it is easily able to identify if the number under consideration is a prime number or not.

Code snippet:

import java.math.BigInteger;

public class ProbablePrime
    public static void main(String[] args) 
      ProbablePrime probablePrime = new ProbablePrime();
      int numberArg = Integer.parseInt(args[0]);
   private void proceed(int numberArg)
      //numberArg is the number under consideration. The argument 1 for isProbablePrime method is the certainty


Expected output:

[root@mypc]# java ProbablePrime 79

[root@mypc]# java ProbablePrime 80

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