AES/ECB/PKCS5Padding Example

main.java

import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;

public class main {
    public static void main(String[] args) throws Exception {
        String keyRaw = "fLVjUa1Sw2Auca6R9VSvLmI0T4OnmgvV";

        SecretKeySpec skeySpec = new SecretKeySpec(keyRaw.getBytes(), "AES");
        
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

        byte[] encrypted = cipher.doFinal("Value to encrypt".getBytes());
        System.out.println(Base64.getEncoder().encodeToString(encrypted));
    }
}