Base64 Encoder/Decoder for Java
Free online base64 encoder/decoder with Java code examples
Working with base64 encoder/decoder in Java? Our free online base64 encoder/decoder helps Java developers format, validate, and process data instantly. Below you will find Java code examples using java.util.Base64 (built-in) so you can achieve the same result programmatically in your own projects.
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Open Base64 Encoder/DecoderJava Code Example
import java.util.Base64;
// Encode
String encoded = Base64.getEncoder()
.encodeToString("Hello, World!".getBytes());
// Decode
byte[] decoded = Base64.getDecoder().decode(encoded);
System.out.println(new String(decoded));Quick Setup
Library: java.util.Base64 (built-in)
// Built-in since Java 8 — no dependency neededJava Tips & Best Practices
- Use Base64.getUrlEncoder() for URL-safe encoding
- Base64.getMimeEncoder() adds line breaks every 76 characters
- Available since Java 8 — no external libraries needed