Script to generate bcrypt values in command line for use in Java apps

bcrypt.groovy

#!/usr/bin/env groovy

import at.favre.lib.crypto.bcrypt.BCrypt

@Grapes(
    @Grab(group='at.favre.lib', module='bcrypt', version='0.7.0')
)
public class bcrypt {

    public static void main(String[] args) {
        Console console=System.console()
        Integer iterations = args.length>0 && args[0].isInteger() ? args[0] as int : null
        String pwd = args.length>1 ? args[1] : ""
        if (args.length<1) {
            while(iterations==null) {
                try {
                    iterations=Integer.parseInt(console.readLine("How many iterations (4-31)? "))
                    iterations=iterations<4?null:iterations
                } catch(Exception e) {}
            }
        }
        if (args.length<2) {
            while(pwd?.length()<1) { 
                pwd=console.readLine("Password? ") 
            }
        }
        String generatedSecuredPasswordHash = BCrypt.withDefaults().hashToString(iterations, pwd.toCharArray())
        System.out.println("---["+generatedSecuredPasswordHash+"]---");
    }
}