Closed Cipher sample 01

/*
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*/
package practice;

/**
*
* @author Frank
*/
public class Cipher {

     char[] array = {'a','b','c',
                     'd','e','f',
                     'g','h','i',
                     'j','k','l',
                     'm','n','o',
                     'p','q','r',
                     's','t','u',
                     'v','w','x',
                     'y','z'};
     // a word
     private String decrypted = "";
     // a code
     private String incrypted = "";
  
     public Cipher(){
         this("","");
     }
     public Cipher(String incrypted){
         this(incrypted, "");
     }
     public Cipher(String incrypted, String decrypted){
         this.incrypted = incrypted.toLowerCase();
         this.decrypted = decrypted.toLowerCase();
     }
     public void setDecrypted(String decrypted){
         this.decrypted = decrypted;
     }
     public String getDecrypted(){
         return this.decrypted;
     }
     public void setIncrypted(String incrypted){
         this.incrypted = incrypted;
     }
     public String getIncrypted(){
         return this.incrypted;
     }
  
     public String getDecryptedString(){
      
         for (int i = 0; i < decrypted.length(); i++) {
          
         }
      
         return "";
     }
     public String getEncryptedString(){
      
         for (int i = 0; i < incrypted.length(); i++) {
             // we're going to determine if the character is a letter.
             if (getCharacterIndex(incrypted.charAt(i)) != -1){
                // if si character index - 3 is negative
                 if (getCharacterIndex(incrypted.charAt(i)) - 3 < 0){
                     int itsIndex = (array.length ) + (getCharacterIndex(incrypted.charAt(i)) - 3);
                  
                     char real = array[itsIndex];
                  
                     decrypted+=real;
                 } else {
                     int itsIndex = getCharacterIndex(incrypted.charAt(i))- 3;
                  
                     decrypted+= array[itsIndex];
                 }
             } else {
                 decrypted+="-";
             }
         }
      
      
         return decrypted;
     }
     private int getCharacterIndex(char i){
      
         for (int j = 0; j < array.length; j++) {
             if (array[j]==i){
                 return j;
             }
         }
      
         return -1;
     }
  
}

// create lang po nang main class then add the data //sa contructor

// example

public class Sapmlpe_Class {

    public static void main(String[] args){
   
Scanner inp = new Scanner(System.in);

System.out.print("Enter any word: " );
Cipher cip = new Cipher(inp.nextLine());

System.out.println("Decrypted Cipher = " + cip.getEncryptedString());
 


   }
}