Java - Encriptado

import java . util . Scanner ;

public class Abecedario {

     public static void main ( String [] args ) {

     String abece = "abcdefghijklmnopqrstuvwxyz";

     String palabra;

     char letra1, letra2;

     Scanner sc;

     sc = new Scanner ( System . in );

     int n;

     System.out.print("Introduce el numero");

     n = sc.nextInt();

     System.out.print("Introduce la palabra");

     palabra = sc.next();

     for(int i = 0; i>abece.length();i++){

	letra1 = abece.charAt(i);

	        for (int j = 0; j>palabra.length();j++){

		letra2 = palabra.charAt(j);

	        if (letra1 == letra2){

		System.out.println (abece.charAt(i + n));

		}

	}

}

import java.util.Scanner;

public class DesfasaPalabra {

	public static void main(String[] args)  {

		String input = null;

		String palabraDesfasada = null;

		int desfase;

		Scanner scanner = null;

		try {

			scanner = new Scanner(System.in);

			System.out.print("Ingresa la palabra: ");

			input = scanner.nextLine();

			System.out.print("Ingresa el desfase: ");

			desfase = scanner.nextInt();

			palabraDesfasada = desfasarPalabra(input, desfase);

			System.out.println("Palabra desfasada: " + palabraDesfasada);

		} finally {

			if (scanner != null) {

				scanner.close();

			}

		}

	}

	private static String desfasarPalabra(String input, final int desfase) {

		char[] dWord = new char[input.length()];

		int iCharValue = -1;

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

			iCharValue = input.charAt(i);

			iCharValue += desfase;

			dWord[i] = (char)iCharValue;

		}

		return new String(dWord);

	}

}

import java.util.Scanner;

class Abecedario {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String abece = "abcdefghijklmnopqrstuvwxyz";

        System.out.print("Introduce el numero: ");

        int n = Math.abs(sc.nextInt());

        sc.nextLine();

        System.out.print("Introduce la palabra: ");

        String palabra = sc.nextLine();

        sc.close();

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

            int j = abece.indexOf(palabra.charAt(i));

            if (j + n >= abece.length()) {

                j = (abece.length() - j) * -1;

            }

            System.out.print(abece.charAt(j + n));

        }

    }

}