💡 Searching for a JAR to "add back" this functionality is a temporary band-aid. The permanent fix is migrating to the official Java API. Recommended Alternatives (No Download Required)
java.util.Base64 is significantly faster because it utilizes JVM intrinsics.
If you are using , you don't need an external JAR. Java provides a faster, thread-safe, and standard version. 1. The Modern Standard: java.util.Base64 download sun.misc.base64encoder jar
With the introduction of Project Jigsaw (modularity) in Java 9, access to these internal classes was restricted.
Are you trying to fix a specific in an IDE like IntelliJ or Eclipse? AI responses may include mistakes. Learn more 💡 Searching for a JAR to "add back"
If the class still exists in your JDK but is hidden, you can force the JVM to allow access using a command-line flag during compilation and execution: --add-exports java.base/sun.misc=ALL-UNNAMED The "Compatibility" JAR
If you are looking for a JAR because a third-party library requires it, you can find the or similar packages on Maven Central. However, be cautious: these are community-repackaged versions of old internal code and may carry security risks. Why You Should Stop Using sun.misc.BASE64Encoder If you are using , you don't need an external JAR
If you'd like to update your project's build file to include a modern alternative: