import java.util.Base64;
byte[] binaryData = {0x01, 0x02, 0x03};
String encodedData = Base64.getEncoder().encodeToString(binaryData);
System.out.println(encodedData);
AQID
import java.util.Base64;
String encodedData = "AQID";
byte[] binaryData = Base64.getDecoder().decode(encodedData);
System.out.println(Arrays.toString(binaryData));
[1, 2, 3]
