A lightweight, open-source class often distributed as a single JAR. It is popular for projects that need a tiny footprint.
import java.util.Base64; // Decoding a string byte[] decodedBytes = Base64.getDecoder().decode("SGVsbG8gd29ybGQ="); String decodedString = new String(decodedBytes); Use code with caution. 2. Common Third-Party Base64 JARs download base64decoder jar
If you are on an older Java version (Java 7 or below) or your project specifically requires a standalone library, these are the most reputable JAR files to download: A lightweight, open-source class often distributed as a
Many older tutorials refer to sun.misc.BASE64Decoder . This class was an internal part of the Sun/Oracle JDK ( rt.jar ) and was never intended for public use. It was officially removed in Java 9 . Where can I download a jar that has sun.misc.BASE64Decoder String decodedString = new String(decodedBytes)