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  1. import java.util.regex.*;
  2. import java.util.*;
  3. import java.lang.*;
  4. import java.io.*;
  5.  
  6. class Ideone
  7. {
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		final String versionString = "v1_00";
  11. 		final String regex = "v(\\d+)_(\\d+)(?:_(\\d+))?";
  12. 		final Matcher matcher = Pattern.compile(regex).matcher(versionString);
  13. 		if (matcher.matches()) {
  14. 			final int version = Integer.parseInt(matcher.group(1));
  15. 			final int interimVersion = Integer.parseInt(matcher.group(2));
  16. 			int patchVersion = 0;
  17. 			if (matcher.group(3) != null) {
  18. 				patchVersion = Integer.parseInt(matcher.group(3));
  19. 			}
  20. 			System.out.println(version + " > " + interimVersion  + " > " + patchVersion);
  21. 		}
  22. 	}
  23. }
  24.  
Success #stdin #stdout 0.09s 27944KB
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https://ideone.com/mbavCI
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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