CodeGym /Courses /Java Multithreading /Practice using StringTokenizer and String.replace Practice using StringTokenizer and String.replace Java Multithreading Level 2 , Lesson 13 Available "Not so fast. Do a couple of tasks, and then you'll have mastered it." 12 Task Java Multithreading, level 2, lesson 13 Locked StringTokenizer StringTokenizer 12 Task Java Multithreading, level 2, lesson 13 Locked Changing the encoding Changing the encoding 24 Task Java Multithreading, level 2, lesson 13 Locked Phone number verification Phone number verification Comments (9) TO VIEW ALL COMMENTS OR TO MAKE A COMMENT, GO TO FULL VERSION matemate123 Level 50, Kraków, Poland 22 March 2023 Can be helpful: https://codegym.cc/groups/posts/regex-java 阿狼 Level 32, Zhengzhou, China 8 July 2022 d30 Jomar Tayactac Level 5, Winnipeg, Canada Expert 28 June 2022 For phone number verification, don't forget to check if the phone number is null or empty. Anonymous #10746173 Level 26 18 December 2021 针对开头匹配数字长度 phoneNumber.matches("^+.*") && phoneNumber.replaceAll("\\D","").toCharArray().length!=12 aijo Level 30, Germany, Germany 29 April 2022 funnily, I used regex in the second part, but not the first (exactly opposite to you): if (phoneNumber.startsWith("+")) return phoneNumber.replaceAll("[\\D]","").matches("[\\d]{12}"); Adam Level 25, London, United Kingdom 20 October 2020 Regex is awesome but makes my brain ache still :) Lawson Level 29, Lagos, Nigeria 13 September 2020 The task are getting deadlier by the day MaGaby2280 Level 41, Guatemala City, Guatemala 30 June 2020 Really hard ones... try to think the easiest and simplest way possible! Hossein Shams Level 1, Atlanta, United States 3 November 2019 Love RegEx
GO TO FULL VERSION