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  1. import java.util.*;
  2. import java.util.regex.*;
  3.  
  4. class Ideone {
  5. 	public static void main (String[] args) {
  6.         String str = "word1_word2-word3";
  7. 		str = Pattern.compile("[-_]([a-zA-Z0-9])")
  8.     .matcher(str)
  9.     .replaceAll(mr -> mr.group(1).toUpperCase());
  10.         System.out.println(str);
  11. 	}
  12. }
  13.  
Success #stdin #stdout 0.1s 48200KB
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stdin
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Standard input is empty
stdout
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word1Word2Word3
https://ideone.com/Urk6I1
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
secret

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