Reverse Number using Java

  1. /*

  2.   Reverse Number using Java

  3.   This Java Reverse Number Example shows how to reverse a given number.

  4. */

  5.  

  6. public class ReverseNumber {

  7.  

  8. public static void main(String[] args) {

  9.  

  10. //original number

  11. int number = 1234;

  12. int reversedNumber = 0;

  13. int temp = 0;

  14.  

  15. while(number > 0){

  16.  

  17. //use modulus operator to strip off the last digit

  18. temp = number%10;

  19.  

  20. //create the reversed number

  21. reversedNumber = reversedNumber * 10 + temp;

  22. number = number/10;

  23.  

  24. }

  25.  

  26. //output the reversed number

  27. System.out.println("Reversed Number is: " + reversedNumber);

  28. }

  29. }

  30.  

  31. /*

  32. Output of this Number Reverse program would be

  33. Reversed Number is: 4321

  34. */

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