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How to equalsIgnoreCase in the code. I want user to input ticket is ignore case.And how to make valid ticket between 5-7. Such as AB1234 is valid, asdfds123 is invalid.

import java.util.*;
public class Ticket
public static void main (String[] args)
Scanner keyboard = new Scanner(;
boolean valid=false;
valid = true;
System.out.print("Enter ticket >> ");
String ticket =keyboard.nextLine();

if((ticket.charAt(0)!='A')&&( ticket.charAt(1)!='B'))
valid = false;
System.out.println("First character must be one of 'A', 'B' or'C'");

What I have tried:

use equalsIgnoreCase

ticket = ticket.equalsIgnore(); is not working
Updated 24-Aug-17 17:18pm
Richard MacCutchan 21-Aug-17 10:42am    
If the first character must be one of "ABC" then you should not be using equalsignorecase.
Mohibur Rashid 21-Aug-17 22:34pm    

if (ticket.charAt(0)>='A' && ticket.charAt(0)<='C' || ticket.charAt(0)>='a' && ticket.charAt(0)<='c')

1 solution

Use String.matches(). Something like this:
boolean isValid = ticket.matches("^[ABC]{2}.*$");
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