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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. import java.util.stream.* ;
  8.  
  9. /* Name of the class has to be "Main" only if the class is public. */
  10. class Ideone
  11. {
  12. public static void main (String[] args) throws java.lang.Exception
  13. {
  14. List< Integer > codePoints = "Java".codePoints().boxed().collect( Collectors.toList() ) ;
  15. Integer codePoint = "a".codePoints().toArray()[0] ;
  16. int frequency = Collections.frequency( codePoints , codePoint ) ;
  17.  
  18. String output = String.valueOf( frequency ) + " ‘" + Character.toString( codePoint ) + "’" ;
  19. if ( frequency!= 1 ) {
  20. output = output + "s" ;
  21. }
  22.  
  23. System.out.println( output ) ;
  24. }
  25. }
Success #stdin #stdout 0.13s 53272KB
stdin
Standard input is empty
stdout
2 ‘a’s