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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. public static void main (String[] args) throws java.lang.Exception
  11. {
  12. String input = "He3ll😷5" ;
  13.  
  14. int result =
  15. Integer.parseInt(
  16. "He3llo5"
  17. .codePoints()
  18. .filter( Character :: isDigit )
  19. .collect(
  20. StringBuilder :: new ,
  21. StringBuilder :: appendCodePoint ,
  22. StringBuilder :: append
  23. )
  24. .toString()
  25. ) ;
  26.  
  27. System.out.println( result ) ;
  28. }
  29. }
Success #stdin #stdout 0.1s 50588KB
stdin
Standard input is empty
stdout
35