Using String method -



new StringBuffer(str).reverse().toString();



Iterative -



Strategy - Loop through each character of a String from last to first and append the character to StringBuilder / StringBuffer



public static String getReverseString(String str){

   StringBuffer strBuffer = new StringBuffer(str.length);

   for(int counter=str.length -1 ; counter>=0;counter--){

      strBuffer.append(str.charAt(counter));

   } 

   return strBuffer;

}



Recursive -



Strategy - Call the method with substring starting from 2nd character recursively till we have just 1 character. 



public static String getReverseString(String str){

   if(str.length <= 1){

      return str;

   }

   return (getReverseString(str.subString(1)) +      str.charAt(0);

} 

public class RightShiftCharacter {

   public static void main(String args[]) {

      String str = "Hello";

      

      char[] charArray = str.toCharArray();

      

      for(int count=charArray.length-1;count>0;count--){

         charArray[count] = charArray[count-1];

      }

      

      String newString = new StringBuilder().append(charArray).toString();

      

      System.out.println(newString);        

   }

}