Reverse a int in java

Method 1 - Without using any other data structure. Making extensive use of % operator. I love this method and you will love it too.

static int rev(int number) {

  int rev = 0;

  while (true) {
   int digit = number % 10;
   number = (number - digit) / 10;
   rev += digit;

   if (number < 10) {
    rev *= 10;
    rev += number;
    break;
   } else {
    rev *= 10;

   }
  }

  return rev;
 }

Method 2 - Using StringBuffer and String

static int rev2(int number){

  int rev2 = 0;
  String numString = Integer.toString(number);
  String rev2String = "";
  StringBuffer stringBuffer = new StringBuffer();

  for(int i = numString.length() - 1 ; i >=0; i--){
   stringBuffer.append(numString.charAt(i));
  }

  rev2String = stringBuffer.toString();
  rev2 = Integer.parseInt(rev2String);  

  return rev2;
 }