When a user enters a message, the encoder converts it into an encoded string; that encoded output can then be passed into the decoder to reconstruct the original message exactly as it was entered.
To use press RUN at the top
The encoder uses Java’s bit-level data processing through the java.util.Base64 utility. Instead of simply replacing letters, the program converts text into UTF-8 bytes, then into a stream of binary bits. These bits are grouped into 6-bit segments, which are mapped to characters in the Base64 character set.
The program is designed to be headless-safe, meaning it focuses only on data processing and runs reliably in terminal or server environments without needing a graphical interface. By using UTF-8 encoding, it stays stable and portable, allowing it to handle symbols, spaces, and multiple languages without losing information during encoding.