Basic implementation of text encryption/decryption in Java

Crypto.java

package io.github.prahladyeri.utils;

import java.util.Arrays;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class Crypto 
{
	private String salt="972$%#@!)(><?|:}";
    //private String salt = "1234567890123456";
    
	//never use space in the message
	public String encrypt(String message) throws Exception
	{
	    //String salt = "1111111111111111";
	    SecretKeySpec key = new SecretKeySpec(salt.getBytes(), "AES");
	    Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding", "SunJCE");
	    cipher.init(Cipher.ENCRYPT_MODE, key);
	     byte[] cipherBytes= cipher.doFinal(message.getBytes());
	     return new String(cipherBytes);
	}

	public String decrypt(String message) throws Exception
	{
	    //String salt = "1111111111111111";
	    SecretKeySpec key = new SecretKeySpec(salt.getBytes(), "AES");
	    Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding", "SunJCE");
	    cipher.init(Cipher.DECRYPT_MODE, key);
	    byte[] plainBytes= cipher.doFinal(message.getBytes());
	    return new String(plainBytes);
	}
	
	public String Encode(String text)
	{
		String result="";
		
		for(int i=0;i<text.length();i++)
		{
			int ccode= (int)text.charAt(i);
			ccode+=3;
			result+=ccode;
		}
		
		return result;
	}
	
	public String Decode(String text)
	{
		String result="";
		
		for(int i=0;i<text.length();i+=2)
		{
			int ccode= Integer.parseInt( text.substring(i, i+2));
			ccode-=3;
			result+=(char)ccode;
		}
		
		return result;
	}

	
	public static void main(String[] args) throws Exception
	{
		Crypto crypto=new Crypto();

		//String plain="11680-364";
		//String cipher=crypto.encrypt(plain);
		//System.out.println("plain:" + plain);
		//System.out.println("cipher:" + cipher);
		//System.out.println("back to plain:" + crypto.decrypt(cipher));
		
		//System.out.println("Result:" + crypto.decrypt("?l&*?Z?t?#?(???"));
		System.out.println(crypto.Encode("0Z"));
		System.out.println(crypto.Decode("52575159515160"));
	}
}