Java find the percentage of uppercas

public class Sample2 {

   public static void main(String args[]) {

      String data = "Hello HOW are you MR 51";

      char [] charArray = data.toCharArray();

      int upper = 0;

      int lower = 0;

      int digit = 0;

      int others = 0;



      int totalChars = data.length();

      for(int i=0; i<data.length(); i++) {

         if (Character.isUpperCase(charArray[i])) {

            upper++;

         } else if(Character.isLowerCase(charArray[i])) {

            lower++;

         } else if(Character.isDigit(charArray[i])){

            digit++;

         } else {

            others++;

         }

      }

      System.out.println("Total length of the string :"+totalChars);

      System.out.println("Upper case :"+upper);

      System.out.println("Percentage of upper case letters: "+(upper*100)/totalChars);

      System.out.println("Lower case :"+lower);

      System.out.println("Percentage of lower case letters:"+(lower*100)/totalChars);

      System.out.println("Digit :"+digit);

      System.out.println("Percentage of digits :"+(digit*100)/totalChars);

      System.out.println("Others :"+others);

      System.out.println("Percentage of other characters :"+(others*100)/totalChars);

   }

}