This program will generate OTP as string (4 digits PIN) different at every run. When we run program, program will return 4 digits PIN, which will be different from last generate OTP (One Time Password).
public class GenerateOTP {
/**
* Method for Generate OTP String
* @return
*/
public static String generateOTP() {
int randomPin =(int)(Math.random()*9000)+1000;
String otp =String.valueOf(randomPin);
return otp;
}
public static void main(String[] args) {
String otpSting =generateOTP();
System.out.println("OTP : "+otpSting);
}
}
Output
First run:
OTP : 2517
Second run:
OTP : 1528
See the output, when I run the program first time the OTP was "2517" and second time it was "1528", both time OTP was different, we can run the program any number of times, each time method will return a different 4 digits OTP.
This program will generate OTP as string (4 digits PIN) different at every run. When we run program, program will return 4 digits PIN, which will be different from last generate OTP (One Time Password).
Output
See the output, when I run the program first time the OTP was "2517" and second time it was "1528", both time OTP was different, we can run the program any number of times, each time method will return a different 4 digits OTP.