Source Code : Finding Every Occurrence of the Letter A

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Finding Every Occurrence of the Letter A

 
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String args[]) throws Exception {

    String candidate = "this is a test, A TEST.";

    String regex = "\ba\w*\b";
    Pattern p = Pattern.compile(regex);

    Matcher m = p.matcher(candidate);
    String val = null;
    System.out.println("INPUT: " + candidate);

    System.out.println("REGEX: " + regex + "
");

    while (m.find()) {
      val = m.group();
      System.out.println("MATCH: " + val);
    }

    if (val == null) {
      System.out.println("NO MATCHES: ");
    }
  }
}

   
  

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