import org.apache.commons.codec.binary.Base64;

public class Base64Demo {

    public static void main(String[] args) {

        String userName = "eoeAndroid";
        String password = "this is password";
        String authCombination = userName + ":" + password;
        String authBase64 = new String(Base64.encodeBase64(authCombination.getBytes()));
        System.out.println("authCombination = "+authCombination);
        System.out.println("authBase64 = "+authBase64);
        String authRecovery = new String(Base64.decodeBase64(authBase64.getBytes()));
        System.out.println("authRecovery = "+authRecovery);
    }

}