return_encrypt.java

import java.util.*;

public class Cryptogram
{
public Cryptogram()
  {
      
      
              
             
    
  }
  
  public String Encrypt(String start){
      
      char[] alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#*&%".toCharArray();
      String[] al=new String[alphabet.length];//you can use this array for finding the location of character in the alphabet
      for(int i=0; i < alphabet.length; i++){// this sets each letter of alphabet into string array al[]
           al[i]=String.valueOf(alphabet[i]);
        }
        
        int modAmount = alphabet.length;
      
      Scanner sc = new Scanner(System.in);
       // System.out.println("Enter Text to be encrypted (letters only)");
       String quote= start;//sc.nextLine();
       char[] quoteArray = quote.toCharArray();
       String[] QA =new  String[quoteArray.length];//strings are easier to compare
       for(int i=0; i < quoteArray.length; i++){// Sets each letter of the entered text to QA array
           QA[i]=String.valueOf(quoteArray[i]);
        }
       
        //START HERE: You don't really need to look at code above
        //keys to remember: the array al[] holds all 26 letters of alphabet
        //the QA[] array holds each character of the text the user entered
    
      
        
      int shift = 5;//use this as your shift
         /* It's up to you if you want to use the for loops provided below.
         you can ignore them or use them
     * you can test that your encryption worked by using website below
     * https://learncryptography.com/classical-encryption/caesar-cipher
     */
    
    String encrypt = "";
           for(int i=0; i < QA.length; i++){
               
                for(int j=0; j < al.length; j++){
                    
                    
                   if(QA[i].equals(al[j])){//found the letter in al
                       int spot = (j + shift)%modAmount;
                       encrypt += al[spot];
                       
                    }
                    
                    
                   
                }
                }
                
                return encrypt;
                
             //lastly, display the encrypted characters to the screen
      
    }
}