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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.util.regex.*;
  5. import java.lang.*;
  6. import java.io.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. public static void main (String[] args) throws java.lang.Exception
  12. {
  13. String pat = "(?!^)\\.(?=[^.]*$)|(?<=^\\.[^.]{0,1000})$";
  14. String s = ".MyFile";
  15. System.out.println(Arrays.toString(s.split(pat,-1)));
  16. s = "MyFile.ext";
  17. System.out.println(Arrays.toString(s.split(pat,-1)));
  18. s = "Another.MyFile.ext";
  19. System.out.println(Arrays.toString(s.split(pat,-1)));
  20. s = "MyFile.";
  21. System.out.println(Arrays.toString(s.split(pat,-1)));
  22.  
  23.  
  24. }
  25. }
Success #stdin #stdout 0.1s 320576KB
stdin
Standard input is empty
stdout
[.MyFile, ]
[MyFile, ext]
[Another.MyFile, ext]
[MyFile, ]