Reverse of a String

package InterviewPrograms;

import java.util.Scanner;

public class ReverseString {

    private static String reveresedString = "";

//Method 01 - Using String methods
    public static String revString(String str) {
        int len = str.length();

        for (int i = len - 1; i >= 0; i--) {
            reveresedString += str.charAt(i);
        }
        return reveresedString;
    }

//Method 02 - Using StringArray
    public static String revofString(String str) {
        char a[] = str.toCharArray();
        int len = a.length;
        String revStr = "";
        for (int i = len - 1; i >= 0; i--) {
            revStr += a[i];
        }
        return revStr;
    }

//Method 3 : Using String buffer class
    public static StringBuffer revofAString(String str) {
    StringBuffer sb=new StringBuffer(str);
    StringBuffer revOfString= sb.reverse();
    return revOfString;
    }

    public static void main(String[] args) {
        System.out.println("The Actual string is: ");

        Scanner input = new Scanner(System.in);
        String actualString = input.nextLine();

        reveresedString = revString(actualString);
        System.out.println("The Reversed string from Method 1 is: " + reveresedString);
        System.out.println("Reversed string from Method 2: " + revofString(actualString));
        System.out.println("Reversed string from Method 3: " + revofAString(actualString));
    }
}