Shift every character by 2 places ahead

 public class reverseStringFromPosition {

    public static void main(String[] args) {
        String s="ramanrayat";
        int a=0;
        String newString="";
        for(int i=0;i<s.length();i++){

            if(s.charAt(i)=='y' || s.charAt(i)=='z'){
                a = s.charAt(i)-24;}
            else {
                a = s.charAt(i)+2;
            }
            newString=newString+(char)a;
        }
        System.out.println(newString);
        }
    }

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