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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. import java.math.*;
  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. double number = 1000000000000004.1d;
  14. System.out.printf("Original: %.20f\n",number);
  15. double fixedNumber = Math.floor(number * 10.0) / 10.0;
  16. System.out.printf("Mult/div: %.20f\n",fixedNumber);
  17.  
  18. BigDecimal bdNumber = BigDecimal.valueOf(number).setScale(1, RoundingMode.FLOOR);
  19. System.out.printf("BigDecim: %s\n", bdNumber);
  20. }
  21. }
Success #stdin #stdout 0.05s 2184192KB
stdin
Standard input is empty
stdout
Original: 1000000000000004.10000000000000000000
Mult/div: 1000000000000004.20000000000000000000
BigDecim: 1000000000000004.1