How Can I Efficiently Encode and Decode Strings Using Base64?

Encoding and Decoding Strings Using Base64

While attempting to encode and decode a string using Base64, you may encounter difficulties. The provided code can be optimized to ensure successful encoding and decoding.

Encoding a String:

1. Choose an appropriate encoding (e.g., UTF-8) and encode the string into bytes.
2. Utilize the Base64.encodeToString() method to convert the bytes to a Base64 string.

Decoding a String:

1. Decode the Base64 string to bytes using Base64.decode()
2. Reconvert the bytes to a string using the specified encoding (e.g., UTF-8).

Code Sample:

// Encoding
String plaintext = "password";
byte[] bytes = plaintext.getBytes(StandardCharsets.UTF_8);
String base64Encoded = Base64.encodeToString(bytes, Base64.DEFAULT);

// Decoding
byte[] decodedBytes = Base64.decode(base64Encoded, Base64.DEFAULT);
String decodedText = new String(decodedBytes, StandardCharsets.UTF_8);

Additional Notes:

• Ensure consistent encoding and decoding between the sender and receiver.
• Consider using standard encoding options such as UTF-8 or UTF-16.
• Utilize StandardCharsets for platform-independent encoding.

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