How Can I Encode and Decode Strings Using Base64 in Java?

Base64: Encoding and Decoding Strings with Base64

The Base64 encoding scheme is a way to represent binary data in an ASCII string. It is often used to encode data for transmission over networks or storage in databases.

Decoding and Encoding a String

To decode and encode a string using Base64, you can use the Java Base64 class. Here's the corrected code:

import java.util.Base64;

String source = "password";
byte[] byteArray = source.getBytes(StandardCharsets.UTF_8);

// Encode
byte[] encodedBytes = Base64.getEncoder().encode(byteArray);
String encodedString = new String(encodedBytes);
System.out.println("Encoded String: " + encodedString);

// Decode
byte[] decodedBytes = Base64.getDecoder().decode(encodedBytes);
String decodedString = new String(decodedBytes);
System.out.println("Decoded String: " + decodedString);

Encoding Process

1. Convert the string to bytes: Encode the string into a byte array using UTF-8 or UTF-16 encoding.
2. Base64 encode the bytes: Use the Base64 class to encode the byte array into a Base64 string.

Decoding Process

1. Base64 decode the string: Use the Base64 class to decode the Base64 string back into a byte array.
2. Convert the bytes to string: Decode the byte array into a string using the same encoding used for encoding.

The above is the detailed content of How Can I Encode and Decode Strings Using Base64 in Java?. For more information, please follow other related articles on the PHP Chinese website!