I am having trouble getting the rest of my code to have the following limits
No more than two '0' through '9' characters may appear consecutively
import java.util.Scanner; public class HW04 { public static void main(String[] args) { Scanner stdIn = new Scanner(System.in); // Started by naming all the variables String combination; // char R, L; int length; boolean big_R, big_L; System.out.print("Please enter a valid turn dial lock combination : "); combination = stdIn.nextLine(); System.out.println(""); System.out.println(""); length = combination.length(); if (length <= 9 && length >= 6 ) { R = combination.charAt(0); if (R == 'R' ) big_R = true; else System.out.println(combination + " is not a valid turn dial lock combination"); if } else { System.out.println(combination + " is not a valid turn dial lock combination"); } stdIn.close(); } }
given your list of requirements this shoudl be albo to be validated by a regular expression.
maybe something like R\\d\\d?L\\d\\d?R\\d\\d?
which reads as: an R followed by 1 digit and an optional second digit an L followed by 1 digit and an optional second digit and finally a second R followed by 1 digit and an optional second digit
you can find elsewhere examples of how to apply that to your code.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.