Preciso de ajuda nesse software para inventer

System.out.println(new StringBuffer("felipe").reverse());

import java.util.Scanner;

class Test{
	public static void main(String args[]){
		Scanner in = new Scanner(System.in);
		
		System.out.print("Digite qualquer coisa: ");
		String palavra = in.nextLine();
		
		System.out.println("Invertido: " + new StringBuffer(palavra).reverse());
	}
}

public static String inverte(String a) {
        char b[] = a.toCharArray();
        char aux;
        int n = b.length-1;

        for (int i = 0; i < n; i++) {
                aux = b[i];
                b[i] = b[n];
                b[n] = aux;
                n--;

        }
        return new String(b);
    }