Never install this on your primary, internet-facing machine. Use a Virtual Machine (like VirtualBox) or a dedicated "air-gapped" computer that isn't connected to the web.
Most modern browsers (Chrome, Firefox, Edge) have completely disabled the NPAPI plugin support required to run Java 6 applets. Installation & Best Practices java jre6u30windowsi586sexe hot
If you are a developer, consider using or a newer Long-Term Support (LTS) version like Java 11 or 17. Most modern applications can be recompiled to run on these versions, providing better performance and modern security. Never install this on your primary, internet-facing machine
Use it only for local applications. Disable the Java plugin in your web browsers to prevent malicious websites from triggering the outdated runtime. Never install this on your primary