project3

package edu.umsl;
import java.util.*;
class Main{
    public static void main(String[] args) {
        EncodeDecode EncodeDecode = new EncodeDecode();
        String defaultInput = "SSBsb3ZlIG15IENNUCBTQ0kgMjI2MSBjbGFzcyBzbyBtdWNoLCBJIHdpc2ggSSBjb3VsZCBiZSBqdXN0IGFzIGNvb2wgYXMgbXkgcHJvZmVzc29y";
        System.out.println("The default base64 input is : \n"+defaultInput);
        System.out.println("The encoded version of the base64 input is: \n"+EncodeDecode.decode(defaultInput));
        System.out.println("Write any string to encode into base64:");

        String userString = validateInput();
        String encodedString = EncodeDecode.encode(userString);
        System.out.println("The user input is : \n"+userString);
        System.out.println("The encoded version of the user input is: \n"+encodedString);
    }

    public static String validateInput() {
        boolean validateInput = false;
        Scanner input = new Scanner(System.in);
        String userInput = null;
        while (!validateInput) {
            userInput = input.nextLine();
            if (userInput.trim().isEmpty()) {
                System.out.println("Empty String Input !! Please try again !!");
            } else {
                validateInput = true;
            }
        }
        return userInput;
    }
}

package edu.umsl;

import java.nio.charset.*;
import java.util.*;
public class EncodeDecode {
    public String decode(String data){
        byte[] decoded = Base64.getDecoder().decode(data);
        String out = new String(decoded);
        return out;
    }
    public String encode(String str){
        return Base64.getEncoder().encodeToString(str.getBytes(StandardCharsets.UTF_8));
    }
}