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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. class Ideone
  8. {
  9. public static void main (String[] args) throws java.lang.Exception
  10. {
  11. String text = "2 + 2.7 - 10 x 20.000";
  12. // Get the numbers:
  13. String[] result = text.split("\\s*([^\\d.]+)\\s*");
  14.  
  15. // Print elements
  16. System.out.println("As string:");
  17. Arrays.asList(result).forEach(System.out::println);
  18.  
  19. // Print elements as float
  20. System.out.println("As float:");
  21. Arrays.asList(result).forEach(e -> System.out.println(Float.parseFloat(e)));
  22. }
  23. }
Success #stdin #stdout 0.19s 2841600KB
stdin
Standard input is empty
stdout
As string:
2
2.7
10
20.000
As float:
2.0
2.7
10.0
20.0