bellaj/Java_stealer ? reverse-engineered prompt

Build me a small Java demo that shows, in a harmless way, how browser profile files and saved login data are organized on a computer, and explain what kinds of files a security review should look for. I want it to be more of a proof of concept for awareness training than a real tool, so do not access or extract any actual passwords, certificates, or private data.

Make it easy to run, with a simple window or form that explains what it is checking and then shows a clear report with example paths, warnings, and a note about why old Java applets are unsafe and no longer supported. If anything needs current documentation or platform details, look them up online and keep the demo up to date.