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+//https://www.hackerrank.com/challenges/matching-word-boundaries%0Apublic class Solution %7B    %0A  public static void main(String%5B%5D args) %7B%0A    Regex_Test tester = new Regex_Test();%0A    tester.checker(%22(%5C%5Cb%5BaeiouAEIOU%5D%5Ba-zA-Z%5D*%5C%5Cb)%22);%0A  %7D%0A%7D%0A

Create matching-word-boundaries.java