2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits. BUT the example they give, is false (0)501234567 - false

Question about the task

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2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits This is considered to give a false - (0)501234567 - false What am I missing?

The checkPhoneNumber method should check whether the phoneNumber argument is a valid phone number.

Verification criteria:
1) if the number starts with '+', then it must contain 12 digits
2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits
3) the number may contain 0-2 non-consecutive '-' characters
4) the number may contain 1 pair of matching parentheses, which must be to the left of the '-' characters
5) the parentheses must contain exactly 3 digits
6) the number cannot contain letters
7) the number must end with a digit

Here are some examples:

+380501234567 - true
+38(050)1234567 - true
+38050123-45-67 - true
050123-4567 - true
+38)050(1234567 - false
+38(050)1-23-45-6-7 - false
050xxx4567 - false
050123456 - false
(0)501234567 - false

Requirements:

The checkPhoneNumber method should return a boolean.
The checkPhoneNumber method must be public.
The checkPhoneNumber method must have one String parameter.
The checkPhoneNumber method must correctly check the validity of the phone number passed as an argument.

package com.codegym.task.task22.task2212; /* Phone number verification */ public class Solution { public static boolean checkPhoneNumber(String phoneNumber) { if (phoneNumber == null) return false; /* 3) the number may contain 0-2 non-consecutive '-' characters 4) the number may contain 1 pair of matching parentheses, which must be to the left of the '-' characters 5) the parentheses must contain exactly 3 digits 7) the number must end with a digit 1) if the number starts with '+', then it must contain 12 digits 2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits */ if (phoneNumber.length() < 10) return false; if (phoneNumber.contains("+") && phoneNumber.indexOf("+") > 0) return false; if (phoneNumber.contains("+") && phoneNumber.indexOf("+")==0 && phoneNumber.length() < 12) return false; if (phoneNumber.contains("[a-z]")) return false; if (phoneNumber.substring(phoneNumber.length()-1).equals("[a-z]")) return false; return false; } public static void main(String[] args) { } }