[Thoughts]Programming musings thread[General]

Post little thoughts, jokes, news, etc. that don't necessarily warrant having their own thread.

Does Java get rid of stuff in RAM after you close a program?

Like let's say you have a program that stores, I don't know, login credentials, or decryption keys, or an API key in RAM. Do you have to manually delete or write over that in order to make it safe, or will the JVM handle that?

Anybody know about memory forensics? Like if a program has some secure/sensitive credential data in RAM, can you then use some sort of tool to retrieve that data?

I remember someone saying this one kind of ransomware left the keys in RAM after it generated them, so you didn't need to pay the ransom, and instead all you had to do was some memory forensics stuff to find the keys which didn't get removed from RAM.