Generate OTP using Java with source code

 

How to GENERATE OTP USING JAVA?

As we know, In most of the projects we require to generate and send OTP to mobile. So, here we will see how to generate OTP using Java.

For generating OTP we will use the Random and StringBuilder Class of Java.  For the tutorial watch the above youtube video.

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SOURCE CODE :

import java.util.Random;

public class OTP 

{

        public static void main(String[] args)

       {

               String otp=generateOTP(5);

               System.out.println("Generated OTP : "+otp);

        }

public static String generateOTP(int otpLength)

{

Random random=new Random();

StringBuilder sb=new StringBuilder();

for(int i=0 ; i< otpLength ; i++)

{

sb.append(random.nextInt(10));

}

String otp=sb.toString();

return otp;

}

}

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